S.G.
I agree with you not wanting to spend a small fortune on maternity clothes. After all, I am NOT looking to make a career out of being pregnant to justify hundreds of dollars on clothes that I will wear for well less than a year.
I love Target and Kohl's. Cute clothes, reasonably priced. I don't shop many other places, but I have found Motherhood Maternity brand at some department stores (JC Penny, Boscov's)...and you are more likely to find sales there rather than buying directly at a Motherhood Maternity store.
In the past, I have bought maternity clothes off eBay, but I have found it to be hit or miss. A couple pieces I've bought don't fit right or the way they should (maybe they were washed incorrectly or maybe they were irregulars to begin with). Another option is to find a mom-friend who saved her maternity clothes and is willing to loan them to you! I did this with baby #2. 3 of my friends lent me their entire maternity wardrobes, so I didn't have to buy a thing!
My advice is to buy maternity clothes that don't look like maternity clothes and that you will be able to wear year after year (when you're not pregnant), so it isn't money wasted. Luckily the fashion trend right now allows for some maternity clothes to look like normal ones.
Good luck & Congrats!!!