I did curtains for the windows in my RV, just quickie WOF with rod pocket with header at top and hem at the bottom. Took next to no time to get 'em done. If you line them, then I'd charge more, but for the ones like I did, I think your price is about right. If the fabric he's chosen is difficult to work with then again you might want to charge more, but most drapery fabric is easy to deal with and I doubt he's wanting silky sheers!