3000 Toys has them for $69.00 (www.3000toys.com, item # FT-0530). Made by Scale Models. Not too bad, but not cheap by any means.
Ebay also has one listed for sale that ends on the 29th, selling currently for $9.99 (first bid), but it also has a 'buy it now' option for $55.00. It too looks like it is made by Scale Models (not that I have way too many CA tractor models, no way!). I'll post the link for it below. Good luck!