At the Coventry show, we also picked up a rack case of 1989 Donruss.
The case has 72 rack packs, 45 cards per pack (plus 3 puzzle pieces) and we paid $50 from the same very nice dealer we bought the '87 Topps wax box from.
We started opening today. I keep forgetting just how many packs/cards are in a case. I should have bought more storage boxes at the show.