I just checked out your profile and I see you aren't getting married until October. I was going to suggest the parks, however it might be a tad too cold. At any rate, I know at Sam Lewis to use the park for your ceremony would be free. A good friend of mine rented a pavilion for $50 just so that people had a place to gather before the ceremony started, and it also provided a spot for her DJ to set up and a place for people to sign the guest book. I would also suggest looking for church rec halls and such. I know a lot of times they are fairly big spaces and they don't charge much or they ask for donations only. I hope that helps. BTW, the Hearts On Fire ring on your idea board is my ring! Good choice!
Try checking with your local American Legion. My brother and his fiance are using the one in Linglestown and it seems to be very nice and reasonably priced!