So i "lost" my keys for a day and found them, but in that day im going crap, is this going to cost 300 dollars?.

i have the S..its just a key with no buttons, but obviously its a chip key..legally has to be since 2007...

now i want a 3rd spare key..lol

Whats the cheapest option?

(besides taping one chip key to the inside of the ignition switch and just using 3 dollar cut keys)