Oh. Well, that's like saying anyone putting out [insert thing] I just want to know if I should do it.
Why will your [thing] sell as well/better/worse than my or anyone's' [thing]?
It's going to boil down to all the factors that affect sales.
Mostly, marketing and promotions.
If I sold 1,000 units, won't mean that you will sell 1.
If I sold only 1, doesn't mean...
You might be better looking at whose actually selling these kind of projects and looking at their numbers.
And I mean in the larger sense than on this forum. Research who is putting out projects like the one(s) you have in mind and analyze their support system, marketing and promotions and scale up or down as necessary.
I don't see why an instrumental album based on hip hop beats would need to follow different rules than anything else.
Gonna expose it?
Gonna get airplay?
Gonna advertise?
Gonna share?
blah, blah, I'd assume AFTER THAT, it depends on how good it is.
a) Compared to everything else...
b) on a pure enjoyment level....
---------- Post added at 07:36 AM ---------- Previous post was at 07:34 AM ----------
BTW, I say you do it. Nothing bad will happen to you if you don't sell 1 unit.
But if you don't do it, you find yourself thinking "I shoulda" and in the end, doing anything/something usually opens some kind of door to other avenues.