2008 Marin Quake 7.1 Trade?

Edit**: I realized pictures are very small. Go here for better pictures: http://www.pinkbike.com/u/Jtg3240/album/Recent-Pics/ . Sorry for the trouble. But remember I am selling this bike. So email me please.

I am selling this bike mainly just to switch it out and I can't afford to fix the problems with it. It was an original demo model for Marin. I bought it from a shop in Maryland for $950. Not much has changed except for breaking of the rear brake, but it just needs a repair kit. I used it for some downhill but mainly for urban riding/trail riding. It's a medium. I'm 5'6 and it fits nicely, slightly big, but I like it like that.

I am selling this bike cheap to anyone that wants to take on a project. With no doubt its a decent bike, the only major thing holding it back is the fork. It's a cheap model, if upgraded the bike would ride great. A few component upgrades and a vacation at the bike shop also wouldn't hurt.

The problems with it:

-rear brake needs a brake kit. costs $30 online.

-The second thing is the rear shock has a switch that adjusts it from stiff to soft, there is a screw to hold the switch on the shock. The threads for that screw are have been somehow ovel'ed. Like the hole for the screw looks like "0" when it should be a "O". I think you could fix that but simply squeezing it round again..

-Also I think 1 tire is torn in a place, about .75 inches long.

-There is a minor dent in the rear triangle.

I don't think defiantly not worth more than $800 but more than $500. So i will will be in that range. Make me any offer. I'll take best offer.

Specs:
Frame: 6061 QUAD XLT Aluminum with Edge II Plus Top Tube and Hydroformed Down Tube, 6061 QUAD XLT 6.8” Travel 4 Bar Link Aluminum Swingarm with Disc Mounts
Fork: Marzocchi Fifty-Five R, 160mm with 20mm QR Front Axle, External Air Preload and Internal Rebound Adjustment
Rear Shock: Marzocchi Rocco TST Coil Spring, Rebound Adjustment (Rebound Adjustment Broke, but technically could be fixed)
Rims: WTB Dual Duty Freeride, Double Wall, 32 Hole
Brakes Front: Hayes 9, Decent pads left
Brakes Rear: Hayes 9 (needs repair kit, $30 value)
Derailleur Front: Shimano Alivio
Derailleur Rear: SRAM X-7
Cranks: TruVativ Ruktion, 32/22 with E-13 Shift Guide Dual Ring Security and Rock Guard
Cassette: SRAM PG-830, Power Glide II, 11-32, 8 Speed
Handle Bars: All Mountain Double Butted 6061 Alloy, OS-31.8mm, 42mm Rise
Headset: The Big Fat Pig R, 1.5” Threadless with Forged Alloy Cups and reduction to 1 1/8”
Seat Post: Syncros Derived, 31.6mm x 400mm