Although 44mm would be a bit large for me personally, I love the chunky nature and design of these early 70s pieces. 565 is a workhorse calibre that performs well and is easily serviced and the watch looks very presentable as a daily wearer with what is quite a modern size. If you like it and the price is right, then go for it. You will need to factor in the cost of service for this as well, if you’re going to wear it regularly.
I’m afraid I can’t comment on collectibility or value, but I doubt there’s a massive market for these.
Happy hunting!