So I dropped my PRS-700 and I sent it through the warranty and paid $30 to get it exchanged. The refurbished unit was sent to me, light scratches, I can deal with it. Dust in the center of the screen, eh whatever. The hinges aren't exactly sealed really well. Maybe a hairline gap on the top. I'll probably keep it until my warranty is about to expire, but I was wondering if I would have to pay another $30 to get it exchanged? Do we have to keep paying $30 to get our units exchanged?