
navi says "hey, listen"...
Did the thought not occur...to create a website...for your business?
$30. domain name and hosting for a year, give or take a few $. This is to start
You said you're generating $200-$400 on a niche. Usually niches are something talked about online. If your income is offline, that is usually mentioned first. So I'm going to go ahead and presume your niche is "car wash"
Advertise locally/Give coupons out to local business owners for their cars/Work out some mutual advertising deal/Wash fleets of cars like local taxis or something
If you're looking to expand online: advertise your car wash on facebook/google places and other business-on-map directories
If you're looking to expand online generically without focusing on your car wash: just...make a blog or some shit...and write about your hopes and feelings...and get adsense...
If you're making money offline, why the hell would you want to get intangible? It's usually the other way around...