Keyless entry.

Hey guys my car didnt come with a keyless entry so I was wondering if I could buy one. Ive read other posts about Ebay (which i do not use). But I found a website called Ikeyless, I was wondering if it was legit. Th ey have a really cool switchblade key remote combo. I dont want to buy it if its not going to work.My question is do you think both the key and remote will work? I know you have to go to the dealer to activate it, could you also tell me how much that cost for you?



Thanks!
2003
Tiburon
GT

Heres the link:https://www.ikeyless.com/vehicles/Hy.../2003/1001825/