You've definitely been bitten by the vice collecting bug!
I have a small collection too, if I see one going cheap & have some spare cash I usually buy it. I see it as an investment, vices always go up in value & if you buy right you can make money.
BTW if you spot any bargain wood vices let me know, especially a record No 52, 52 1/2 or a 53. Trying to buy a few for our Men's shed.