The auction site allows people to use a credit card?
Yes, this particular one does allow it (2% fee when buying cars).
They include an extensive agreement. Doing charge-back is not wise.
I'm not sure if they will use this website or maybe they have some other one.
Sometimes, they also do $5k money order participation per-payment.
Meaning, you would need to give them $5k money order to be able to place bids.
If you win, this $5k goes towards the winning bid.
If don't win, they give it back to you.
But that's for high-end items: yachts, exotic cars, properties.
For BTC, I think they will do cash offers only (actual cash, money orders).
This would be great for buyers because the prices will be lower.
Not that many people will shell out $10ks in cash and money orders,
just to have a change to bid on some BTC.
In this case I would expect prices to be 50% off...
But again, we are talking years ahead.
Who knows what's going to become of BTC 3 years from now.