I've never really considered list price to be relevant because it's not generally that hard to compare prices via relative means for luxury items. For example,

I've never really considered list price to be relevant because it's not generally that hard to compare prices via relative means for luxury items. For example, I know that a standard pack of chocolate digestive biscuits are 50p. Based on that I can figure out whether some fancy cake is worth buying. This falls apart a bit in some places (is a home really worth 800000x as much as a chocolate bar?) but generally it works for me. It does have the effect of reigning in spending which I consider a bonus. To elaborate a bit - I don't particularly mind spending £2 for something that could have been gotten for £1.50. I mind spending £2 for something which is almost identical to a different item that I could get for 20p. I think this is where many people fall down. Getting an expensive brand of shampoo at a discount is meaningless if it's still 10 times the cost of regular.