I hope he comes back here to post to educate us about WHY these cans are collectible. I clicked on some links and some had grading scales based on condition and how much paint was left in the can.
Empty cans will sell for as much as the same can full if the buyer wants/needs it.
If it's a rare can/color like Krylon Hot Raspberry or Icy Grape or Pineapple Yellow it would pull $200 easy if it were empty, twice that if full in good condition.
the mistake some people make is they thing EVERY old can is worth tons of money and that's not the way it works...I see some people on eBay post old, random cans for $50-$60 just because it has a 1960's date on it and they'll curse you out when you ask why they priced that specific can so much...lol...not cool...
most older (1950's-late 1970's) off-brands will get you between $5 & $25, $30 full...empty maybe $5-$20...
the brands that get the most money are:
Krylon (Borden stock, before SWP took over)
Rustoleum
Red Devil
Wet Look
Wet Paint
Sparvar
and any of the above-mentioned brands' paint racks, clocks, etc.
one guy on eBay paid over $1000.00 for an old Rustoleum rack & sign...
these Borden stock Krylons below will get you $80-$150 each...I need 2 more to complete the set of this color (different label designs)...
I just paid $20 for a can or clear Rustoleum Woodsaver I needed to complete the set...it wasn't worth more than $4-$5 but I needed it and didn't wanna pass it up.(pic below)
To answer the question "why these cans are collectible" I would say-for me personally-I have been using spray paint for years...I'm an artist and grew up writing graffiti and I just love spraypaint....but some people just collect them for the sake of collecting, some buy & sell on eBay strictly to make money because there is a market for it...some people collect color charts & fan-decks from paint companies....hell, I've seen match-book collections and garment buttons for sale before...
to each his own I guess...
I recently came across this 1951 paper label Rustoleum bucket (quart) in great condition with the original Rustoleum logo....I paid $5 and got offers up to $400 so far for it...
I keep talking myself in and out of selling it...but I've never seen this logo before and I'm positive I can get more for it...just gotta wait & see.
again, if anyone happens to come across anything please feel free to let me know if you're selling...
oh and shipping cans is weird...USPS will allow them only to be shipped Parcel Post but I know people who ship them Flat Rate Priority and they always arrive.
I ship them FedEx Ground Service....it's illegal to ship aerosols on airplanes due to the pressurized cans...wouldn't want a $300 can of paint to explode before you get it anyway....