The slide out keyboard does not appeal to as many users as they would like it to. l like physical keyboards, but they add too much bulk to devices nowadays, in my opinion. l am sure there are others out there with the same opinion.
That being said, it looks Sprint is selling them new for $99 now. If you trade the phones in, you definitely won't get much for them, as the company will have to refurbish the devices and resell them to make their money back. That is the problem with trading in, someone needs to make out on the deal, and it is usually the store.
You can make more by selling your own devices, like on ebay or Amazon, or even locally. After checking on Amazon, it appears that there are some people selling new for around $150. That would mean that with your two being used, they would probably go for around $100 each.
Please keep in mind that this is just my personal opinion, you could possibly get more for them.
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