I noticed he's priced at $223.99 for the standard set at Alter Ego. That's about the price he'd be at SSC if you take into account the Rewards Points earned. Plus, you do earn Rewards at AE, but not as much as SSC. If SSC doesn't allow a coupon on this guy, I may go this route.
Edit: Upon further investigating, the standard set is sold-out at AE. But the Deluxe is available for $246.99,
$13 off SSC's price, which again, is how much you would earn in Rewards with them.
Seems AE prices some of their stuff according to Sideshow's price minus their Rewards you would earn with them. That would seem like a good deal normally, especially considering you would earn additional AE points, but it's the Sideshow $20 monthly coupon that is the difference, if they offer it.