No.
You read the description. You use Contact Seller to ask questions. You bid, clicking twice to confirm your bid.
If you win, you pay.
If you do not pay, the seller opens and wins an Unpaid Item Dispute and you get a Strike on your account. Most sellers automatically Block bidders with Strikes. If you get "too many" Strikes, you will be unregistered and will not be able to use the site.
