If you look at my portfolio, you will see the quality of my pencil sketches. If this is the quality and style that you want in a sketch, then you must take my bid.
It is difficult to quote the time it will take without seeing the photo that you want to be sketched. If you can provide the photo I can let you know how long it will take.
If you want to see a work in progress, please arrange the timing with me, so I can scan your sketch and send it to you.