3" Memory Foam Mattress Topper $50 Get it at BuyDig Check it out Brad's Deals Editor Michael, Details This queen size 3" Deco Home Memory Foam Mattress Topper with Infused Lavender Scent drops from $89.99 to $49.99 with free shipping at BuyDig. That's the best price we found by $30 and it's $22 less than similarly-sized 3" memory foam mattress toppers we found elsewhere. Advertiser Disclosure