Where would someone go to advertise an online store. Like if I were an affiliate and sold cameras where am I going to advertise?
Well, forum advertising is great -- find some camera forum, and just become an active member there. Put your site in your sig. There's also a lot of other payed forms of advertising!
Try some ppc. If you have enough budget you will find a formula to spend less than you earn so you will be able to have a stable business with less work.