First-time crypto customers welcome

Everything you need to pay with confidence.

You do not need to be a crypto expert. Choose the easiest option for you, follow the network written on the checkout screen, and let the site guide you from “Awaiting” to “Confirmed.”

Start shoppingHelp me choose a coin
Why the direct checkout uses crypto

A clear payment record without putting card details on this site.

NXT LVL's on-site checkout is crypto only and uses direct wallet-to-wallet payment. It creates a blockchain record that can be independently verified and matched to the exact order.

1
Exact order detailsThe checkout generates the coin, network, amount, address, and QR code for your order.
2
Blockchain verificationThe site checks the public blockchain and updates the payment status as confirmations arrive.
3
No card credentials on NXT LVLPaybis handles the card purchase on its own secure website.
Best for most first-time customers

Choose USDT on Ethereum (ERC-20)

USDT is designed to track the U.S. dollar, so the total is usually easier to understand than a changing BTC or ETH amount. Choose USDT and Ethereum Mainnet / ERC-20 only. USDT can vary slightly from $1, and network or provider fees still apply.

₮

USDT

Ethereum Mainnet · ERC-20 only

The clearest beginner option. Never send it over Tron, BNB Chain, Base, or another network.

Ξ

Ethereum

Ethereum Mainnet only

Best if you already hold ETH. Send the exact ETH amount shown; your wallet adds a separate network fee.

₿

Bitcoin

Bitcoin Mainnet only

Best if you already hold BTC. Detection can be quick, but final approval waits for six confirmations.

Direct Paybis purchase

Buy crypto through Paybis.

The checkout opens the official Paybis purchase page. Choose an available payment method, purchase enough to cover the order plus provider and network fees, and confirm “You receive” covers the exact crypto amount shown by NXT LVL.

Recommended · Paybis directPaybis from NXT LVL checkout

PayPal, ACH, debit card, credit card, or Apple Pay may be available. Buy enough crypto to cover the order plus all fees.

Required final checkVerify “You receive”

Live rates and fees can change. Do not pay if the receive value is below the exact crypto amount shown in NXT LVL checkout.

Already own crypto?Send from your existing wallet

Skip the purchase provider and send the exact BTC, ETH, or ERC-20 USDT amount directly to the NXT LVL receiving address.

Paybis is independent from NXT LVL: Paybis controls availability, fees, limits, identity checks, and approval. Any Paybis account or wallet you create belongs to you, and NXT LVL does not receive the personal or payment information you enter there.
💳Use this first

1. Open Paybis

Click “Buy USDT on Paybis,” then choose PayPal, ACH, debit card, credit card, or Apple Pay when available.

Purchase enough to cover the order plus all provider and network fees. For USDT, choose Ethereum / ERC-20.Open official Paybis USDT page ↗
✓Required check

2. Verify the receive amount

Compare the live Paybis quote to the exact crypto amount shown in NXT LVL checkout before authorizing the purchase.

If “You receive” is short, do not pay; return to NXT LVL checkout.
◈Existing wallet

3. Already have crypto

Choose the matching asset and network in NXT LVL checkout, then send the exact amount from the wallet you already use.

For USDT, choose Ethereum / ERC-20 only. Match the complete receiving address before sending.

Why the exact receive amount matters

Provider and network fees can reduce the crypto received and leave an order underpaid. Purchase enough to cover those fees, then use the exact crypto amount shown by NXT LVL as the minimum that must arrive. Your dollar total is converted into a unique crypto amount whose small fractional ending identifies the order on the blockchain. Send the exact amount whenever possible; if it changes within the small accepted buffer, paste the transaction ID so it can still be matched.

Paybis direct · recommendedChoose PayPal, ACH, debit card, credit card, or Apple Pay when available.PayPal and ACH may offer slightly better rates and quicker approval when available.
Cover every feePurchase enough to cover the order plus provider and network fees.Confirm “You receive” covers the complete invoice before paying.
Existing wallet · fastest routeSend crypto you already own directly to the order address.Match the asset, network, exact amount, and complete receiving address.
Approval is controlled by PaybisPaybis can require identity or fraud checks.NXT LVL cannot override Paybis eligibility or compliance decisions.
Research checked August 24, 2026 using official provider documentation. Fees, eligibility, verification, and security reviews can change. No legitimate provider can guarantee approval or instant delivery for every customer.
Avoid scams: only use official apps and websites. Ignore unsolicited “support” messages and never share your recovery phrase, password, verification code, or remote access to your device. These services are independent companies; NXT LVL does not control their availability, pricing, reviews, or security decisions.
Already have crypto?

Open the app you already use.

You do not need a new account. Open the official app below, choose Send or Withdraw, then use the QR code or exact address and amount from checkout. These shortcuts are for crypto that is already available to send.

CCoinbaseBTC · ETH · supported USDT routes $Cash AppBTC only · Bitcoin Mainnet, not Lightning RRobinhoodUse an existing transfer-enabled account CCrypto.comChoose the exact checkout network KKrakenWithdraw only an available balance TTrust WalletBTC · ETH · ERC-20 assets MMetaMaskETH or USDT ERC-20 · not native BTC EExodusMatch the selected asset and network BBitPay WalletSend from an existing wallet balance
Use an available balance. A brand-new purchase or deposit at an exchange can be held before withdrawals are allowed.
Match the network exactly. Cash App must use Bitcoin Mainnet; MetaMask is for Ethereum and ERC-20 in this checkout.
Return to the checkout. Keep it open after sending so automatic detection can match and confirm the order.
◈
Fastest path

I already have crypto

  1. 1
    Add products and open your cartReview the items, quantities, and order total.
  2. 2
    Continue to checkoutEnter the requested contact and shipping or pickup information.
  3. 3
    Choose BTC, ETH, or USDTUSDT ERC-20 is usually easiest for a beginner; otherwise choose the coin already in your wallet.
  4. 4
    Open your wallet or scan the QRThe exact amount and receiving address also have one-click copy buttons.
  5. 5
    Match all four detailsCoin, network, exact amount, and full wallet address must match the checkout.
  6. 6
    Send once and keep the page openThe checkout will show when the transfer is detected and when it is confirmed.
▣
Need crypto first?

Buy it directly with Paybis

  1. 1
    Start the normal checkoutEnter your information, then choose the crypto you plan to buy.
  2. 2
    Open the Paybis purchase pageChoose an available payment method and purchase enough to cover the order plus fees.
  3. 3
    Check the receive amount“You receive” must show at least the exact crypto amount on the NXT LVL invoice.
  4. 4
    Use the NXT LVL addressPaste the receiving address into Paybis and choose the exact asset and network.
  5. 5
    Complete Paybis checkoutAvailability, limits, and verification depend on Paybis and the customer.
  6. 6
    Return and paste the transaction IDThis lets NXT LVL verify the crypto payment.
Read before sending

Four rules that prevent the most common mistakes

Never share your recovery phrase or private key. NXT LVL and legitimate payment providers do not need either one.
Use only the network printed in checkout. Wrong-network transfers may be permanent and unrecoverable.
Check before approving. Crypto payments are generally irreversible, so confirm the amount and address and send only once.
Stop if anything looks different. Keep the checkout open and contact support before sending if the coin, network, amount, or address does not match.
What happens after you send

The checkout shows your progress in real time.

The transfer can be detected before final approval. Fulfillment begins only after the required blockchain confirmations protect the order from replacement or a temporary chain reorganization.

1Awaiting
2Detected
3Confirming
4Confirmed
USA fulfillment

Domestic shipping information is collected before payment.

NXT LVL Research is a USA-based research company. The checkout collects the required shipping or pickup information before generating payment details for the order.

Important payment note

Buying crypto happens on Paybis's website; it is not processed by NXT LVL. Availability, fees, limits, and identity checks are controlled by Paybis. Any Paybis account or wallet you create belongs to you, and NXT LVL does not receive the information you enter there.

All products are for laboratory research use only and are not for human consumption, medical, veterinary, or diagnostic use.

Ready when you are.

Choose the products you need, then follow the checkout screen exactly. If you are unsure about any payment detail, stop before sending and contact support.

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