Uploadnsell for selling ebooks

One of my readers informed me about Uploadnsell, a website and program for selling electronic files (or to sell ebooks). Normally I’m a “more the better” fan for things like this, as in the more places to sell ebooks the better, but in this case I’m not convinced and have decided not to upload and sell my ebooks with them.
Definitely the strongest selling point they have is that there are no fees or commissions with Uploadnsell. They guarantee 100% of the profits (after PayPal’s cut) to the authors and claim to make their money entirely through advertising. That’s the good part.
The rest is what makes me not so interested. For starters, there is no bookstore for anyone browsing. A customer needs to already know about your ebook, want to purchase your ebook and have the direct link to buy your ebook, and that is information they’ll have to get from you. To sell an ebook this way, you will have to do all the marketing and get someone to want to buy your ebook, then they’ll click on the Uploadnsell link and the process goes through PayPal and then a download page. Well, that’s funny because that’s exactly what I recommend doing for the times that you sell from your own website and blog. You don’t need a third party to do this when it can easily be accomplished for free on your own.
Uploadnsell requires you to give your PayPal account information to them to handle transactions. Now even though they are likely ethical businesspeople, I really don’t enjoy giving out my banking information to anybody unless I have to. Especially considering that their website is somewhat basic, still in Beta mode without much evidence of customers, and it contains more typos than I’d like to see (feels as if English is a 2nd language). Currently it just doesn’t feel professional enough to make me want to do that.
So I’d love to hear from anyone who has experiences with them. I could be totally wrong (wouldn’t be the first time), but I’m presently more than a bit skeptical. Can you sell ebooks successfully with Uploadnsell? If so, please share with the rest of us.