Allstars and Rockhouse I believe are the same place; they don't stock things but rather order them in, meaning you don't stand much chance at getting something if its been out of print for years! If you look at their performance stats on GEMM you'll see they don't fulfill a lot of orders!
There's also a place called WMI in Canada which is also on GEMM that does the same thing - I think its just www.wmi.com so you may find it easier to order closer to home. BTW I've ordered from all three and found them okay, though if I remember rightly Allstars postage rates were pretty high! BABY DIDDY