We recently purchased a 2002 XC70. We are happy with the car, however it only came with 1 set of keys. I inquired at the dealer and they want $150 for a basic key, and $350 for one with the keyless entry fob. What we have now is a separate key/keyless fob. I can live with just having a second key with no keyless entry fob. Are there any known alternative (and hopefully lower cost alternatives to getting a replacement key from the dealer?