how much dose it cost to pant a boat its fiberglass so can I just sprey paint it or do I need to have it done by someone.

Well, you're going to need to give a bit more info!! Let's start with the size and type. (bass,v-hull,etc)

even better if you have a pic.

As LBH eluded to, what type of paint, what size boat etc.  Just bought some automotive red urathane that was $176 a quart.   Also depends on if you have the equipment, compressor, spray gun etc and skills.  Do you want it to look smooth and shiney?  Most paints are not going to stay on a fiberglass boat for very long.  There are some marine grade epoxies that do OK, but almost any paint you use, after it gets a few months age on it,  will start to flake off when it get's chipped.

If your'e thinking spay cans, forget it.  

They paint Corvets all the time and it seems to stay ok but that's an automotive application and doesn't seem to work well on boats.

interlux paints are designed exclusively for fiberglass/marine application.  Great stuff but we are way ahead of ourselves.  Let's get the basics first and take it from there.  This is the paint job I did on my jon.  

http://bassresource.com/cgi-bin/bass_fish/YaBB.pl?board=boating_ID;action=display;num=1119359773

Not what you are looking for but if you read the steps involved, you can tell if you even want to get involved in such a project.  Keep in mind, you will be skipping the "metal-etching"  steps because your boat is not aluminum.

the reason it sticks better to corvettes is that a vette is a different type of fiberglass. A vette is made from SMC (sheet molded compound) and a boat is made from resin,mat and gelcoat. The auto paints dont adhere well to gelcoats,but a vette dont have a gelcoat.I own an auto body shop and we paint about 20-30 vehicles each week,we do some work on vettes and other plastic cars(saturns) and have no problems but a few years ago we tried some glass boats and had issues with each and every one,needless to say we refer the bass boat stuff to the competition ;D

well there ya have it. Gambler deals with these issues everyday so I would stick there with the advice. I've only painted aluminum boats personally.

However, back to interlux products. (not an endorsement) Gambler, have you viewed these paints? I understand that PPG, house of color, dupont, sikkens, etc are primarily made as "automotive" paints but interlux is the mainstream brand of boat paint. They are huge and have many systems for different applications,i.e. top decking, hull paint, striping, etc. Could you (gambler) do us a favor and check their web site and give us a professional opinion from bassers point of view?

http://www.yachtpaint.com/usa/default.asp