I've never liked card collecting.
I collect unconventional things like HO scale model railroad 1900s steam locomotives.
I can't really say because some model locos can run at $5,000 but most at only $200 so I'd think a card shouldn't really be worth it.
I just did the math and a top of the line but not too amazing locomotive I bought for $110 weighs ~2 lbs and the same amount of cards with the same mass cost around 10 times as much.