I want to sell my iPhone to gazelle?

I want to sell my 16gb iPhone 4S, I found the website "gazelle" but I'm worried it's a scam. It's the only website I found that will send me a check, and that didn't seem like an untrustworthy website. Suggestions?

Gazelle is a good site, unlike some others. But they may not give you too much for your 4s since the new iPhones were announced and eventually released. I would get a quote from Gazelle and then see if you can get more for it on eBay.

They advertise on our cable all the time if they were a cheap fraud with the internet
they'd have a bad reputation & that don't.