Selling my Sprint Apache, How do I do it?

[saqer]

1. If you do an ESN swap to an old phone it doesn't necessarily mean you have to lose your rebates. Ask the CSR to notate your account for those rebates. Like someone mentioned it may or may not have to be applied as a credit.
2. If your wife wants the 6700 and doesn't yet have a number, give it to her, and add a new line of service via the ebay deal then do several ESN swaps to get your number onto the Touch

or...

2. If you sell it on Ebay make sure your number is on the temporary phone and that you "release" the 6700 from your account making it free to be activated on another.

You could always sell it on craigslist or the bargain trader of this website and save a few bucks...