Went Back to HTC EVO 3D from Samsung Victory

I've had enough of the Victory.. it's too small and, I don't know, I just loved my HTC EVO 3D phone so much more... my Samsung Galaxy Victory is only 1 month old, what should I do with it? I'm thinking of selling it on eBay or Craigslist.. it comes with a case for the phone that I bought separately as well as a 16GB (or if you prefer, two 8 GB SD cards) as well as the box and all the paperwork that came with the phone. It works perfectly for what it is, I just didn't like it... what should I start the selling price at?

.....or is it possible that because I have insurance/warranty's on both of these phones and the fact that VM is pretty much out of stock of the HTC EVO 3D phones that I may be able to send both phones back to VM and receive the Samsung S3?

let me know what is possible or what I should do... thanks a lot!