Was never a lack of big box Amiga's in my neck of the woods in Canada. Calgary and Edmonton had decent Amiga shops, but I don't recall the names atm.
Locally, my Amiga vendor was called Desktop Computers. I got my original A3000 there, which I later traded in towards an A4000/040. He always had a great selection of stuff, including an A3000T with a '040 in it which he ran their support BBS on. I distinctly remember the Pee Cee guys always going into his shop and removing the mouse ball on that BBS machine to piss him off, lol. He later moved the BBS machine into a back room so people couldn't keep stealing the mouse ball. In later years he always had a good selection of A4000's and A4000T's with toasters in them, I think he did a fair bit of business with the local TV station in regards to sales. I did a tour around that time of the production facilities of the TV station and vividly remember they had a pretty nice Toaster setup, multiple machines.
For the life of me, I can not remember ever seeing an A600 at his store, and don't ever really recall seeing them much period up here. Most of my friends had A2000's kitted out, A3000's or A4000's. We were BBS guys, so we didn't get into the wedge Amiga's all that much.
About a year before I sold the A4000, I came into some money and wanted to expand it. The local dealers prices were far too high for my tastes, so I found Wonder Computers in Vancouver and mail ordered a '060 card, a CV64 3D card, and some additional RAM. Ended up selling the machine (also with a 4091 in it by that time, with a 6 disc CD-Changer) about a year and a half later when C= was really on the skids and ended up with an Acer Pentium 200 machine.