How much should I plan to spend on a salt water fishing boat?

Your question is one that doesn’t have a definite answer. There are many things to consider when you buy a salt water fishing boat. First, what is your budget like? Can you realistically afford to buy a new one or should you buy a used one? If your budget is low you may be able to get a terrific deal on one that needs some work. Then you can fix it up a bit at a time.
How often do you plan to use your fishing boat? If you will be in it all the time, then it makes sense to invest more. If you will only use it a couple of times per year then go with a more economical approach. Think about the size you need and any perks. You will find very basic fishing boats out there for salt water, those that are moderate, and those that have everything you could ever imagine.