Tractor #851 worth

The LEGO Technic Tractor #851 has a sold value of $131.97 used, based on real eBay transactions. Current live eBay listings show sellers typically asking around $127.99 for it, which is very close to the sold value. If you're looking at the LEGO version, this is the benchmark. For other tractor parts or accessories listed, their prices vary widely depending on the component and brand. If you meant a different type of Tractor #851, clarify the brand or product type for a more accurate read.