Yes, that would be a good deal, depending on how you define "good condition." I would say if the rubber is good and it has fewer than about 35,000 actuations, it's a fair deal.
I've replaced them on my older D200 myself, it's very easy to do. The reason I mention it is that it can be indicative of hard use. Two cameras can have the same number of actuations, but if one has been treated roughly and another one babied, I would definitely consider the babied one a better deal.
Factor in batteries for sure, they wear out and eventually need to be replaced. However, I'm still using batteries I bought with my first D200 and have only retired a couple of them (mostly third party). I was underwhelmed by the MB-D200 and sold it; the MB-D10 used on the D300, D300s, and D700 looks much better; but since I don't shoot very often at maximum fps with bigger lenses, I haven't personally felt a need to get one and for me that money was better spent on spare batteries.
It's still a lot of camera for the $$$. I sure wouldn't sell one of mine for that $$.
To repair the poor adhesion of the rubber do not need to replace it ... a drop of glue in the right places makes the job for less than 25 cents.
) on my bag. Just to repeat, beat up rubber is indicative of harder wear if it's the original rubber. Of course, someone could replace the rubber, then if it's worn it's an even worse sign of hard wear. BTW, as I recall, I spent about $25 replacing a couple of the grips and I'm very glad I did; I prefer to have my camera to not have a grip that is tacky and old.
That's about two very different circumstances ... amateur or professional use ... poor adhesion due the sweat of our hands, then a drop of glue does the job ... deterioration and poor appearance of a rubber mistreated by hard work, then you have to buy the original rubber kit to DIY or send the camera to Nikon's repair center, always been that way and I am afraid it will remain forever
