I lost my only master key this winter while shoveling snow. I spent 12 hours outside with a metal detector and also sifted every inch of snow on 1/4 acre of yard through a wood box with 1/4 chicken wire. I didn't find the key.
Ended up calling ~20 local lock smiths until I found a reasonable price, they were pretty much all around ~300-400. The one I chose was able to come to my house, cut the new key, program the chip and the fob to the car (which also rendered the previous key unusable). He did that for my master and also cut me a valet key. Used a generic blank with fob housing (typical ebay key and blank aftermarket fob). 2 keys, 1 fob internals, and full programming for $270. Probably could have got it done cheaper if I bought the blanks myself, I'm sure I paid a mark up. Luckily I had a blade from a previous broken master that he was able to use to cut the new keys but I think they can still create a new one without a copy it just costs more.
Don't go to the stealership if you don't have to.
NA Supra Clutch & Flywheel // Dezod Green Headers // BC 264 Cams // Titan V2 Cam Gear // JOEZ Intake