I'd also have to second the notion that having a domain with .as will probably not be as powerful as a .com.
ban.jo is a great play on words, but really it's just that. It's like a landing page with a headline that is super clever but just doesn't convert as well because the message is not crystal clear. If the ban.jo platform had massive widespread adoption, I'd reevaluate that line of thinking.
I've personally bought domains with .is (Icelandic domain) and .io, but those were for a different audience and purpose. .io was considered because of the tech connatations it carries (.as won't have an attached connotation)
For an ecommerce site, it might be worth considering what Pocket and Harvest did - find a prefix like getpocket.com and getharvest.com. Especially for the ecommerce space. You want something that prospective users will remember and find without confusion as you start evangelizing the platform.
Just my vantage point, hope that's helpful. Cheers!