2010 w/tech key programming
 

Long story short, I lost my key fob. I have the spare, however, I do not want to be SOL if I lose this one. I am ordering a new key fob and key from the dealer. They want to charge 1 hour or $99 to program the key. Can I do this myself and avoid the labor charge?

I haven't lost a key for my Mazda, but in experience, they tie the key fobs to the ecu.
I think you can buy generic keys via eBay, but I suggest just get but a couple keys done at once, cuz the labor charge is fixed regardless the number of keys

Sent from my Galaxy Nexus using Tapatalk 2

If you have two programmed keys, you can program more on your own. But if you only have one key, the dealer has to do it.