I have 2 fobs: a master and a regular, euro frequency (433M Hz). I have the PIN code for the master. If you have one FOB and can put your alarm into learn mode these would be perfect to get a full set of 3 FOBs working correctly. I just paid $584 for two just like this (story below); so what is a fair price? I don't really know but make me a reasonable offer. Long story: I got these new a few years ago when I recovered my PIN. I sold my car and couldn't find these FOBs, only had the 1 I was using. I gave up looking and bought replacements for the buyer. I just found the two fobs. SO, now I am offering these for sale.