But your budget is too limited. A 10-second TV commercial slot on prime time is simply impossible for the smaller business as the corporate houses have the financial muscle to eat them alive. Besides, there is no point advertising on national television, if you aren't big enough to cater to the demand which such an advert, it could theoretically generate. So you're going to have to look at other ways of advertisement. You need to work on some cheap advertising for small business. The Coke and Pepsi model is simply not for you.
If you can't throw the money, you're going to have to put in the effort. The best way to advertise a business depends a lot on the type of business you're into. Advertising an indispensable product is often easier and requires a little effort.
This strategy works a lot better online. On the Internet, you'll have loads of sites that would be glad to be affiliated with yours and post your banner on their site, as long as you hold your end of the bargain, of course. Webcomics promote other webcomics and games, blogs promote other blogs by putting in a good word about them. You can contact the sites related to your business and help them so they can help you back.