First let me apologize for repeating information if this is already know. I just replaced a 522 with a VIP 622 for $49.00. Dish is currently running a promotion where current customers can upgrade to a 722 for $199 ($99 after rebate) or a 622 for $149 ($49 after rebate). But if you push the issue with customer care they will just charge you $49 for the 622 or $99 for the 722 so you won't have to wait for a rebate.
Good Luck
Good Luck