6873 Spider-Man's Doc Ock Ambush

Walmart.com is discounting 6873 Spider-Man’s Doc Ock Ambush by 20%. It’s now just $23.97, down from $29.99 MSRP. I just checked Amazon if they are doing the same thing, but they are not even selling the set (only third-part resellers). 6873 comes with Spider-Man, Iron Fist and emo Doctor Octopus.