I've brought many products to market. I wouldn't get hung up on the enclosure; that is the least of your worries.

I'd say take a step back and look at the bigger picture; how much of your time and money do you have to devote to the project? What will your sales outlet be? Internet is fine (and I'm a big proponent of it) but then keep in mind you have to have a website, how you'll collect funds (CC, Paypal, etc.).

I wrote an article for a magazine once where I outlined the task of bringing a simple product to market. The magazine later told me they had one of the biggest repsonses to that article, almost all saying how utterly depressing it was! Once you get past ordering your first run of boards, ordering components, populating, testing, installing, writing directions, inventory - I'm free-wheeling here... it soon makes you wonder how anything makes it to market. And if it's any good, here come the knock-offs.

Didn't want to ran on anyones parade... figure out first if you really want to do it.