Bulk buying/collecting embroidery hoops?

A question about : Bulk buying/collecting embroidery hoops?

Can anyone advise where I can buy embroidery hoops? I'm after about 12 in a variety of sizes, as cheap as possible.
I plan to have different fabric in them and hang them on the wall to cover some imperfections in our new house.
Obviously with moving money is very tight!

I've tried gumtree, freecycle etc and rang quite a few charity shops near to me (one shop had one in for Ј3.20, which I thought was expensive?!) and I don't use ebay. Anymore ideas?

Best answers:

• That seems to be about the going rate for many hoops. Even E-bay doesn't seem to have much to offer, even if you did use it! You may need to get just 3 or 4 of the most useful sized ones for the time being.
  SewandSo do a decent range, but if you're buying on-line, make sure they're UK made ones as some others (American, Asian) etc are nowhere near as well finished and can scuff and catch your fabrics.
  Good hunting!
• You could try hunting up someone who either makes them or sells wholesale.... Try 'Job lots' on e-bay
• Thanks for your suggestions, I have got my carboot mad mother in law scouring the stalls and I got that one from the charity shop.im guessing its going to be a slow process as I thought if would be able to get them used quite cheap!