Hi Stefani,
I think its a good idea. In fact, a couple of months ago - I registered a handful of domains for the same purpose There is a small paper here where I live that will run your ad for four weeks for only $42 - it is delivered by mail across several counties, so has a wide local reach.
For under $50, you can reach a fairly large and mostly untapped market with an online offer - it's worth testing to see if you can get them online, and then to see if the page converts.