This is a tough one as its for sure an original event rack from 2006 with both plaques still attached, but its missing its lights and floor.
umm, If it was complete with everything still attached ready to roll it could fetch £1000.
If it was standard rack with no holes for lights and no plaques it would be about £300-500.
I really dont know where to price it as who ever buys it has no choice but to replace the lamps as who want to drive round with holes in the rack. The plaques will sell separtly for sure and fetch some good money but as a whole im thinking £300-400 because of the added work needed to find spot lamps which are around £500 a pair for the original lamps from warn.
Hope this helps, im really not 100% on the value of this but the reasons for my thinking are there and sorry if its lower than you were expecting.
Jon