Free, just pay shipping ($5 approx). Brand new, just sitting in my garage.
https://www.ebay.com/itm/CNC-Keyless-Fuel-Gas-Cap-fit-Yamaha-YZF1000-YZF600-R1-R6-Black-Tank-Cover-US/263409676404
Compatibility:
YZF1000 R1 All Year
YZF600 R6 All Year
YZF1000R Thunderace All Year
YZF600R...