Ugh.. so how much is this going to cost me? (broken key)

[BennyLava]

So the internal plastic in my keyfob finally broke. I'm hoping that someone here can tell me a few things about them. Like, would you buy this? And where can you get the new key cut? Anywhere else besides the toyota dealership?

And is there any reason I couldn't just put my old metal key into the new case? I'm asking all this because I still remember the days of replacing your key costing more than a couple of car payments, on some vehicles.

http://www.ebay.com/itm/New-Remote-K...48b14c&vxp=mtr