Replacing a broken key on 1999 Lexus SC400

Hello: Was wondering how much would it cost to get a new master key w/ attached remote control?? And how long would it take??

Asked by for the 1999 Lexus SC400
These keys are expensive from the dealer. We got a flyer regarding key blanks from a company called Mikado that repair Lexus dash displays saying they were supplying keys cheaper than the dealer. I think this is their present address but I was told recently they may have moved to Gilroy California
Mikado Technology CO
1435 Huntington Avenue
South San Francisco, CA 94080
I look up Mikado Gilroy and get the following details.
Mikado Motor Works Gilroy CA (408) 848-5000