do they use dye-sub, laser-based, inkjet, or photochemical? What kind of paper do they use? $4 for 12"x18" sounds too good to be true (it's $40 in Canada using fingerprint-proof, scanner-proof Fuji matte photopaper using photochemical print.)
This new paper is gorgeous, no need for watermarking my proofs, anything printed on that paper can't be scanned properly (it'll look like the picture is composed of dots).