Before you shirk that price as too expensive, keep in mind that you are getting the device off-contract. If you were to purchase it for full price from other carriers, the Curve 8530 would still be around $300.
The reduction in price is already good news, but when combined with Boost Mobile's new 'Shrinkage' plan, Boost is looking like a great all-around value. Unlimited talk/text/data plans start at $50 ($60 for BlackBerry), and are reduced by $5 for every 6 months you stay with Boost, down to $35. You can then keep that $35 rate for as long as you're their customer.
We know, with all the Android, Windows Phone 7, and webOS devices out or on their way, it's hard to get excited about a BlackBerry. But for the bare bones email/messaging user, the Curve 8530 is still more than sufficient.
source: Boost Mobile via Engadget