Kmart cuts up to 75% off on select items in its clearance section. Plus, Shop Your Way Max members bag free shipping on select orders. (Not a member? It's free to sign up for a 90-day trial; otherwise, shipping starts at $5.99 or store pickup is also available for select items.) A couple of best bets:
Update: Coupon code "KODLBMSM" cuts an extra $15 off purchases from $149.99 to $199.99, an extra $20 off orders from $200 to $299.99, or an extra $30 off purchases of $300 or more. (A maximum discount of $30 applies.)