I know many of you love your gDiapers. I think they're pretty adorable and a great “starter” way to move toward cloth diapering! However, I hear you when you say that the inserts can be pretty expensive. Kate from SeeKateSew put together an awesome tutorial on how to make your own gDiapers inserts. Not only are her inserts adorable, they're very easy to make and they'll save you a lot of money over time!.
Although I love the finished look a serger offers, I'm 99.99% sure you could just sew these around the edges instead of serging them if you don't have a serger at your disposal. If I'm wrong, someone correct me!