I had a case like this recently where a builder had tiled a customers en-suite and bathroom. They then wanted there kitchen floor doing but the builder passed on that because they wanted granite on the floor and the builder didn't fit any stone products because they were prone to failing in his opinion!!!!!!!!! They showed me his work and they seemed proud of what he had done, It wasn't much better than what's on here. Could you do it to this sort of standard they asked. I had to stop myself from laughing and replied "of course i could no problem" While thinking I couldn't do it that bad if I tried. Funny what some people class as acceptable and good work.