Considering SE's Online Store has shipping costs, too, it might even be cheaper elsewhere. But I don't think it'll get released just right away...or let's say I hope, cause I currently couldn't afford it, lol.If they don't sell it in person, you can probably get an equivalent deal on reputable site's like Amiami. For example, KH3 Sora PAK is $150 on SENA's Online Store, on Amiami it's $135. Shipping is about $15-20, so it'd be roughly the same price, but you can order it from your home.
SE tends to only make each figure for the a limited time (the year its released), and based on how demanded and scarce current Aqua merchandise is, I really don't foresee this figure lasting long on anywhere.