The flip side of this is that some of the tiers can be priced due to their exclusivity. For instance you could have the N64 cartridge and say you have one of the 250 made, or whatever the number originally was. Similar thing with the tshirts which have been restocked a few times.
Don't go mad about it as I'm going a bit devils advocate as it were. Personally I'm no collector so exclusivity of physical items is of no interest to me, but refilling tiers is unfairly dismissive to people who pay more for the initial perceieved rarity of the items.
"Shanley, do you think Donkey Kong Country revolutionised gaming?"
"Yeah mate, I think it probably did"