Honestly the fiberglass work was not that hard, watched many YouTube video's on it first, me and my girlfriend did it she really impressed me and was a lot of help with two people doing it. The cost of it I'm not sure. I got my resin, hardener, and fiberglass matt for free from a cousin. The fleece was really cheap though, used like 6 feet of it. This was my first time to try using fiberglass and it worked good. I did not spend a lot of time on sanding since i was using roll on bed liner which was a plus cause sanding is a pain.