You can get pregnancy test at the dollar store for only 1 dollar. I have used them for both of my pregnancies and theey worked just fine.
You can buy a two pack (First Response) for $17... and they're pretty accurate.. but there are cheaper ones that do the job. :)
just take it to tha bathroom use it and it free lol
good ones cost anywhere from 9$-40$ :]
You could call the store and ask.