Office Depot has the TurboTax Deluxe 2006 And State for only $45. Buy it and qualify for the following rebates (click on the "rebate savings" link on product page to see full listing):

Also use some Office Depot coupons (including $30 off $150 and many freebie w/ purchase coupons) to save more.

$20 rebate on System Mechanic 7 (exp 4/30)
$20 rebate on BitDefender Antivirus v10 (exp 4/15)
$10 rebate on Cosmi Print Perfect Platinum (exp 4/16) 
$15 rebate on Mozy Remote Backup (exp 4/16)
$40 rebate on MyAttonrney Home & Business (exp 4/15)
$10 rebate on Brelitz Spanish Premier (exp 4/16)
$35 rebate on Ca Internet Security Suite 2007 3 User (exp 4/30)
$20 rebate on Easy Media Creator 9 (exp 4/15)
$10 rebate on IS3 Anti-Fraud (exp 4/15)
$30 rebate on PDF Converter Professional 4 (exp 4/15)
$10 rebate on StopSoft Registery Repair (exp 4/15)
$29 rebate on Webroot Spy Sweeper Software (exp 04/16)
$40 rebate on Kaspersky Internet Security 6.0 (exp 04/16)