[Arran]

 I wouldn't bother with that fleabay seller, he does not really sell grille cloth, what he does is pedal upholstery or drapery fabric that he found in a fabric store, like Joanne Fabrics, as grill cloth. You might as well save your money and buy it directly from Joannes rather then off of this hack.
   I have suggested this before on the alternative forum but I still wonder why nobody has asked SMS in Portland, Oregon if they could reproduce some of these? SMS specializes in reproducing upholstery fabrics for vintage cars, which have some similar weave patterns to grille cloth at times so it obviously is not an issue.
Regards
Arran