not possible legally to a start with
I am not considering legal issues here, because it depends on which country you want to host your page, and even if it is not possible, you can still do a crypto to crypto page, which is not regulated.
This aims in the direction i would advise you to go. Find out which country would be best for you needs. Second make sure that you can not be taken advantage of (charge backs). Maybe think about alternative forms of payment. I think of gift coupons, prepaid cars etc. It is easy to buy those and would be just a small inconvenience for the buyer. I would also advice you to not make it to price since people wouldn't want to use it.