They deliver within seconds of your purchase and if you didn't get the mail first time, then wait a min or to then they sent it to you again incase you didn't get it the first time. GameKeyNow is my only choice next to steam if i have to buy cd-keys. I can only recommend this place.
I did initially think there must be a catch to this but thought as I was paying by Paypal it would be covered. I payed for the game, which was around £5 cheaper than buying it directly from the origin website, I was sent the download link within a couple of minutes.
I followed the instructions and the game was downloaded, installed and up and running without any issues.
I have to be honest and say I'd never heard of Gamekeysnow before buying "Remember Me" from them, the purchase was problem free, the order was verified by a text message which was painless, price was WAY better than any other seller could offer and it was delivered in about ten minutes, What more could I ask for?