I hear ya' on hoarding stuff.
The way the economy is, I feel a lot of products may not be re-produced once they are gone (plus, I hate working on a project and find that I'm missing a product to continue building!).
This is especially true on retracts: I won't buy a kit unless retracts are included as so many have been discontinued or the chance of getting them is 'months down the road' whereas I'll buy a set of retracts, knowing I can always get the plans/kit.