fibreglass kits can be good, but now days with ebay and all, anyone who has half a idea how to fibreglass, can sell there back yard kits on ebay and compete with the professionals, and some shops are trying to compete on ebay, to stay open
because of the above, the price has fallen dramatically on kits, and sorry to say so has the quality, lots of bad copyies are out there now and given fibreglass kits a really bad name
not to mention thin bodykits, to cut down on materials used to make them, that have sky rocketed in recient times, resins etc used to make them as they are a petrolium by product
a good quality made bodykit, will have min $250 worth of raw materials alone
not to mention the time/labour required to hand lay the parts, and all the other associated costs, moulds required, rent, bills advertizing etc etc
a kit for $700 etc on ebay would no way near go to cover these costs
and if you do get one, pannel/paint shops dont want to take the job on to paint these parts, as of the poor quality, and problems that can can arise whilst there painting them and afterwards , or if they do most will charge you the earth to paint them
if you do get a fibreglass kit
try to find someone with one whos purchaced one and is completly happy with it, and find out there supplier
a lot on ebay, the pics they use may look good, but most ive seen dont use cars to advertize there work therve personally done
just a little heads up and advice