For vintage - I hit up Quality Tools on 52nd street SE. I got every two weeks and have picked up some great stuff that was made when metal was king. I bought a slide-hammer there last week (wish I had it last year when I replaced axle shafts on my Ranger). This hammer weighs twice as much as the PA equivalent.
Channellock - I usually wait for the PA sell off.
Surprisingly, I've picked up some great stuck in the Canadian Tire bargain bins (if you dig down - -sometimes you come up a winner).
And, auctions, auctions, auctions. Those retiring farmers have REAMS of good tools, and bolts, and fittings and garden gnomes......I bought a five-gallon pale filled with threaded rod last year at an auction, all pieces 36" or better. Paid 10 dollars. Picked up a box of hammers (think 24" by 36" by 12" for $5.