Is this for your own custom pages?
If so, Escrow.com does have a recently added feature where you can have both make offer as well as buy now --according to their website.
Let's see if any fellow Namepros members have been using this new feature with success.
Hopefully, someone here with actual experience with this will help provide some insight into that as well as the choice of the other options, such as Paypal, Stripe, etc.