Thanks! I don't know much about startjoin, the entries I see on google are somewhat vague. It very well might be but that looks like something I will keep an eye on. I have one feature already in distribution, so i already have some merchandise to move. I will look into opencart. Thanks!
Startjoin is relatively new, so I am not surprised google is a bit behind.
I forgot to mention that there are some links in my signature to a cpanel web host with PHP and mySQL which will be required if you go for a self hosted shopping cart like opencart, but to help there is a simple instillation wizard in the cpanel
Good luck with your venture!