As far as I understand it, you join eBid, you are sent the verification email, you click on the link, or paste it into the address bar, & you are a member, & can start bidding or buying. This is, in most cases, instantaneous, so that you don't miss out on bidding for or buying an item that is ending.
The verification of your registration details, as put in the form, are carried out as soon as possible after you have joined. If your postal address, or phone number is missing, contains an error, or is fake, then your account is put on hold until you rectify the problem.