[Cameramakers] opaque projectors or enlargers

[Invisionform99]

Sir;
I am interested in knowing more about buying a used  opaque projector. I am a School Art teacher and artist, I wish to buy an inexpensive projector that will accept a  8"x10" image and project it on a wall  to the size of 5' x 6'. without much distortion. Would Government Surplus be good? What do you have for sale? Please advise.  I live in the south Fla area. thanks    Joe