How about another nice Amazon deal? Right now this MEREZA Double Sleeping Bag with Draft Tube is on sale for $50.39 (reg. $94.99), plus there is a 5% coupon you can clip on the product page. That makes the final price just $47.87, a total of 50% off the regular price. Here is the link to the item:
MEREZA Double Sleeping Bag with Draft Tube – only $47.87 with sale and coupon (reg. $94.99)