I wanted to update my post with what we did to replace our key fob. We purchased a genuine OEM Hyundai key fob from remotesandkeys.com for $150. Then we took it to our Hyundai dealer who programmed it for $50. So for a total cost of $200, we replaced our key fob. I may take the key blank down to Lowe's at some point to grind a new key but I have actually never used that and so it is not very high on my list of things to do.