Please take this as gentle constructive criticism, since that's how it's being offered.

You don't want to invest in your business because you don't want to build or run your own web site. You don't want to pay someone else to do that for you, because you think they charge too much.

I do think you need to take a step back and do some research into the realities of the photography business, because your view seems a bit naive. There's no free lunch. Selling photos is a business. You have to invest in that business to get returns back out of it. There are literally tens of thousands of people out there with web sites wondering why nobody is buying their images. the web site is just the beginning of running a successful photography business. And having images is the easiest part of getting started.

Photoshelter has some new free publications that talk about the business and what to expect if you're going to dip your toe into it. You should check them out.

But if you think you're going to just stuff some pictures somehwere and sales will happen by magic, you're setting yourself up to fail. This business is tough and requires a lot of work. Taking professional-quality pictures merely gets you to the starting line. I'd slow down and figure out why things are the way they are out in the big world out there and why those folks are taking that 30% before you waste your time and energy doing things that won't work...