Looking for a kayak

Hi, so with the new paddle it’s a lot better. It’s amazing how much more power I can get with this paddle. The kayak tracks ok. Cruising I can do 3-3.5mph. Fastest I could get it was 4.5mph. This isn’t very fast so I was looking on Craigslist for something faster and found this (see below) it’s a heritage fisherman pro 14’ is this a good kayak? How much do you think I should try to get it for? Thanks

https://raleigh.craigslist.org/boa/d/cary-heritage-fishermanpro-14-fishing/6935805563.html