I spent over $40K (yes, you read that correctly) having a 1971 SeaCraft 20' redone. While that sounds like a fair chunk of coinage, when I tally up how many days I fished that boat vs. what I would have paid a guide to take me fishing that many days, the $40K+ I spent on that boat was a raging bargain. I had EXACTLY the boat I wanted, right down to the custom hinges.
There was a post on this site a while back asking what it costs to redo a 20' SeaCraft. The answer entirely depends on how nice you want the finished product. We all have different standards as to what things are worth. I have a fishing addiction and that spilled over into how I wanted my boat to be