The movement has the reputation not being as reliable as it's predecessors and successors (I cannot confirm that, I only have one 7002-7020 that runs o.k.).
For some the straight markers might be less attractive (at least I don't like them on that watch).
Personally, I don't like the green lume of the markers that you see very often.
For some (not for me) they might be neither fish nor fowl in terms of their age (generally speaking '80s watches are not as popular)
I agree with Axel on these points; and I'd like to add the dial is the face of the watch, to me part of it's personality. Even though the markers are the same as on a 6309-7290, it's also missing a day wheel which I find odd, just that tiny date window.
I do like that the dial depth from the glass is more than the previous models, and more like the 7s26's of today.
The things that make it less desirable to me are the too green dial markers and the date only.
I wonder if a 6105 dial would make it better?
To add to what others have said, while 7002's generally tend to trade for less than other seiko diver generations, $65 is kind of low for a 7002 in good condition. IN good condition they tend to be closer to the $100 range. The market is flooded with warmed over 7002's so it's quite possible that the watch you are looking at might be clean but not all original, which would explain the low price.
I actually think the 7002 divers are some of the best values out there because of their depressed market prices. The 7002 model provides many of the beloved features and design elements of the 6309 and 7S26 divers, but does so for less money. Finding one with a good condition original dial (read: no the lime green lume markers) in good working condition (or better yet: recently serviced) isn't too difficult, and they can be purchased and enjoyed for less than a comparable condition 6309 or 7S26.
In case you can't tell already, I love 'em! Here are two of mine, both with original dials:
Questions concerning how early February through (edit: May 1969 with thanks to rfortson for the May 1969 photo update) 6139-6000 (“Pouge”) SpeedTimer dials look compared to the later dials motivated me to re-post a small research project I did a while back on another forum. This relates only to...