That sounds a lot of money??
I actually have an ad in the book Yellow Pages spent about £96 last year and have just signed to do it again. It is showing my business name, address, tel no. and website address with a big bold line above and below to seperate my add from others. (they did want me to have a box but I had such a good response to this one I stuck with it. I have a very good client that has spent so much she has paid for the ads 2 times over!)
With all this said... in the paper work was a leaflet to send off to Yell.direct for free. not sure what sort of ad I get but here is a link so you can see some.
Advertising with Yell.com | Internet advertising products using » Yell Direct
there are many sites that let you have free listings, I found them by typing in a search for nail tech in my area and a page of listings came up.
Hope this helps.