Generally I would agree, and give them the benefit of the doubt, but it smells too fishy. A lot of goodwill was pumped up during testflight, but went dead very soon after money got involved, almost a full 180 and with barely a word afterwards. For all intents and purposes they still took the money and ran
I opened a fraud report too detailing as best as I could in 1000 characters (maximum limit of the complaint text box) how this scam went down, but I don't think anything will come of it. Apple just said "thanks, we'll check it, but won't reply"
How easy this scam was pulled off pisses me off the most, not the 30 bucks I wasted. A dev can build hype with promises, release a half-cooked app, get people to buy it with some sale tactics, and then disappear.
You logically give devs time to work on the stuff, so by the time you start getting worried of being scammed, the refund window is out.
I'm ranting more about Apple here than the bean devs. You often see other storefronts step up in similar situations to do right by their users.
I've been using Arctic for a few months now, and it's very impressive.