Topps 1987 Bubble gum baseball cards - worth more in packaging or opened?

My husband and I were at an antique store just for fun to see what was in there and he found a small box full of 1987 Topps bubble gum baseball cards packs, all still in the original packaging and with the bubble gum still in them. So we bought all 30 little packages they had. Our argument is whether or not it would be worth more to open them and carefully put the cards in protective cases or to leave them as is, unopened and in the packages.