For your Craigslist consideration today here's a pair of unused Laclede wide base pickup truck chains for singles, $80 cash FOB Pomeroy WA.
Unused, just lightly weathered from riding around in a pickup bed in their bag.
Heavier chain than the V-bar and welded tack bar styles; these would also be pretty good choices for your little hobby tractor.
Clipped from the Laclede website:
Specifications
Cross Chain: 6259
Cross Members per 1/2 Pair: 10
Cross Member Length: 18.12"
Links per Cross Chain: 12
Rim Chain Length: 79.6"
Weight Per Pair (lbs): 39
Compatible Tire Sizes:
10.50/80-18, 11L16, 12-15LT, P315/70R15, 325/60R15, 285/70R16LT, 295/75R16LT, 305/85R16LT, 305/70R16LT, 275/70R17, 285/75R17LT, 295/70R17LT, 305/65R17, 305/70R17, 275/70R18, 285/75R18LT, 295/70R18LT, 325/60R18, 275/65R20LT, 285/55R20LT, 285/60R20, 295/55R20, 305/50R20, 305/55R20, 285/50R22, 35X12.5X15, 31X13.50-15, 32X12.5X15, 33X12.50R15, 33X14X15, 35X12.5X16LT, 36X13-16, 32X12.5-16.5LT, 33X12.50R16.5, 33X15.5-16.5, 33X14.5-15, 35X14.5-15, 35X13.5-16, 33X12.5-17, 33X12.5-18, 33X13-18, 32X11.50-20, 33X12.5-20, 33X11.5-22
http://lacledechain.com/traction-stock/3229r/
(Cut and paste into your your browser, if you'd like)
O'Reilly's wants you to pay $225 plus the governor's share for a set of fresh ones. Pick these up for $80 and save some coin!
I do wander over to the L/C area from time to time and could bring them along if that helps.
Thanks for looking!