Do you guys know of any place online for to buy steel hardened chains for a reasonable price. I need a 10-12 footer.....

I've got one for my - pedal powered- beast but I need something considerbly longer and boy are these chains expensive as fck.....

Let me cheat here. 12mm SNOW Chains which seems to be of harded steel is relatively inexpensive when looking at 12mm bike/security chains.

Any of you 2 wheelers have a source for good quality 12mm+ chain per ft ?