I can tell you about the current project, but this is irrelevant. I test different ideas. What matters is: it's b2c and I want my potential users to prove they are interested by making a payment. It could be escrow or any kind of refundable payment. I'd prefer to accept payments with google pay or apple pay, but any easy payment methods at ok. Bank transfer is not easy at all.
Payments amounts vary from $10 to $200.