PlayBook to Sprint (and maybe even Verizon), but if this Office Depot listing is to be believed, a 16GB, WiFi version of the 7-inch tablet will also be heading to some retailers for the very competitive price of $499.99. It's really the first solid PlayBook pricing we've seen, and we've got to admit, we're happy to see that RIM followed through on its word to offer the touchscreen slab for under $500. (And hey, it sure beats the leaked Xoom pricing we saw earlier this week.) Unfortunately, the screenshot above doesn't reveal much more, although it lists the QNX-powered slate as hitting Office Depot stores on "Week 17," which is the last week in April according to our calendar. That's a bit later than the March date we've heard before, but either way we're waiting for spring to start and hoping Office Depot's cut out its shady practices so we can snatch up one of these ASAP.