I live in Frankfurt and have not found many affordable thrift shops or resale shops. I have US Army base access and they have some pretty decent thrift shops with good prices. There is a Kleidermarket in Frankfurt that has clothes and shoes, prices are not as cheap as Goodwill, but there are some bargains to be had. It is across the street and down a couple of doors from C&A whose address is Zeil 48, Frankfurt Germany, 60313
Phone: 49 69 299810. Also, there is a really good little thrift shop, mostly clothes, shoes, linens, purses in Wiesbaden (not far from Frankfurt) that is only open on Wednesdays, if anyone is interested, write me and I will tell you more about this one. I just discovered a WONDERFUL shop in Strasburg, France, about 2 hours from Frankfurt, that had a little bit of everything. I loved it. If you are interested, let me know. I want to rent a truck and go back soon to get some antique furniture peices for very cheap!