This store, while in a new location, has been in New Hope for a while. They sell armour and armourment. You can get period pieces in knives, swords and they also offer a small selection in helmets, scabbards and such.
Some pieces are for show only. Others can be used. The staff is very knowledgable and will tell you what the piece is about, how to handle it, additional needs to display or wear the piece and how to care for it.
I am not sure on the pricing. It may be a fair market value, I have never shopped around for these kinds of items. You may want to do some homework in this area.
For most of us, this is a curiousity shop, but I know a few SCA folks who will find this store facinating. I like the new location, you don't have to climb the steps to get into the shop, but being Main Street, New Hope, you may want to find parking off the street.