What offers did you have?
This domain is worth nowhere near 5-fig, I'm afraid. I don't think it is even worth 3K. But indeed it has value.
Most sales of 2-word coms ending in the the term "deals" are in the 1k-2.5k range (see Namebio for example and search at the ending). But the term "Monster" at the beginning is quite rare in 4-fig sales; and it actually kind of drags the whole thing down in price. Although it is still valuable, of course. The combo is a valid one.
I see this domain valued in the 1.5-2k range, to be rather precise. If I had it, I'd price it at 2k and discount at 1.5 if it doesn't sell. There are also signs of market going a bit weaker in the <3k range so... that would be my price point.
You can also try a retail of $2995 for a test, if you're willing to wait longer - who knows. The price is always in the eye of the beholder.
Anyway, good luck!