Hello,
I understand you'd like to create a .net based commerce site. I'd be happy to help you with that, can I suggest that we setup NOP Commerce which is an open source .net based commerce system that you can tailor to your needs.
I could set this up very quickly for you, and have you up and running in no time and within your budget. If you need further customisations we could consider those after this project is complete.
I look forward to speaking with you more about your project.
Regards
Damian