I think you would have to check with eBid on that as usually only one account is allowed on eBid unless there is a very good reason. They might allow you to have two as it is a prize but you had better ask them before bidding to make sure. The advert does say that if you are already a seller+ then you would get credits on your account.
That's because it's in the eBid army mess where I'm welded to my bar stool !