I am looking to sell my XL-2 with many extras 7" screen wide angle lens rain cover hard case extra batteries. What should I ask for it? I was thinking around $2,100.00 I don't know?

Check current and completed E-bay auctions, major dealers that have used gear departments like B&H, maybe look at Craigs List, and so on. And you might want to consider selling it in pieces rather than as a bundle.