most probably a shill, 22 bids on 5 items, 50% same seller and 0 feedback is a little suss, but not enough to say yay or nay for sure. if he's bidding up in small increments, then that would also be a sign. but you never know. we all start somewhere and i know people who have used e-bay for years and still bid up $1 at a time...
as Dodgydave said, if its a shill bid then the seller is in on it. may even be the seller doing the shill bidding with a different account. i usually assume its shill when i see these things tho. its just so common. i honestly think there is more shill bidding with trading cards on e-bay than regular bidding.