How much money can i make by posting the following camera equipment on ebay?

I have the following:
Sigma ef 530 dg super flash for nikon
Nikon 70-300mm f/4-5.6G AF Nikkor SLR Camera Lens
Nikon 18-55mm f/3.5-5.6G AF-S DX VR Nikkor Zoom Lens
Nikon SB-400
Nikon case
Nikon D3000
All of this equipment is used, but is in mint condition and includes all batteries, cables, and original packaging
how much could I expect to get from this on eBay because I might sell it and switch to canon

Sigma super flash: retails around $230, so I'd say $150

70-300mm lens: Retails around $170, so maybe $125

18-55mm lens: refurbished units go around $90, so if yours is just used and not refurb, I'd say $75

SB-400: Brand new is $120, so $90-$100, bump it up to $150 if you're including the TTL cord

Case: $30? What did you pay for it? There are different cases out there.

D3000: A refurbished body-only is around $375.So I'd say around that for a used model. I'd be hesitant to purchase a used camera from a stranger for anything more than that when I can get a Nikon refurb unit with a warranty somewhere else for the same price.