I spent just under £6500 & I got about £700 off, which is just over 10%.
Musical Images in Edgware will give great prices without haggling that much, but in the end I got sevenoaks in Weybridge to price match, since they were close to me.
The other Musical Images outlets quoted me £5000 for an infocus 7205 projector when everyone else was selling them for £3500 at the time . However, the branch in Edgware offered much better deals. Additionally, other sevenoaks didn't offer as good a deal as the Weybridge branch.