There's one in the town next to mine. Everything is brought in by consignors aside from a few novelty items (pencils & bookmarks). They do sell brand-new copies of Cathy Duffy's 100 Top Picks as well. I consign there all the time and keep a running balance on my account. They don't take everything, but I haven't yet figured out how they pick & choose. Prices are usally 30-80% less than retail. It's truly a used bookstore loaded with homeschool, teaching, and educational supplies. They even offer games and higher end used toys like Playmobil. Here is their website: www.thehomeschoolroom.net
They also have 2 classrooms attached to the store where local homeschool moms/dads/artists/music teachers/etc. offer classes daily. The classes right now consist of Spanish, writing, economics, an assortment of math (Algebra I & II, Trig, Geometry), and a variety of music lessons.
Everyone who works there has been or still is a homeschool mom, and they have to have been doing it for at least 3+ years. They are currently working on opening one about 40 minutes north of the current location.
I love & cherish this store. It's saved me SO much money, and I can find almost any curriculum ever mentioned on here there. I only wish I had thought of opening it myself! :D