Payment processing is the biggest gatekeeper in the peptide business (maybe for good reason). It’s very hard to find reliable processors because of the nature of the business. Most flagged companies need several processors and must rotate them. Chargebacks only make things worse.
The worst I’ve seen is fitness influencers using Shopify sites... those people are clueless.
A few weeks ago, I saw a major US based "bulk" peptide seller run into issues with his payment processors. It probably cost him a good amount of money.
My thought was, why not offer a good discount for payments in stable coins like USDT or USDC? That would help minimize losses.
There are plenty of Reddit subreddits (some good, some gray, some bad) where people share ideas about payment processors for peptide businesses. I worked for a while in the gambling industry, where payment was always complicated until they built their own.