I did a quick search on 'deal' and just came up with a new subscriber deal. I just wanted to check with the experts here to make sure there is nothing I haven't thought of. Here is my situation:

I am a current Sprint customer on a Corporate plan with work with a Treo 300. I want a Treo 650.

Is eBay the best place for a phone for under 600 bucks ? I don't mind if it is lightly used. Is there any promotions/websites/stores that I am unaware of to acquire a Treo 650 that anyone would share?

Thanks for the help!