your guys' pricing is, indeed, very strong.
and this is true, Guidi is not supposed to go on sale - and if it ever does, somebody's probably breaking the rules. :|
In the past I worked in retail selling high-end audio/video systems (Wilson Audio, Wadia, Mark Levinson, Conrad-Johnson, etc.) and I can say some manufactures, generally those that occupy a specific market or utilize a specific technology or have proprietary products, etc. can demand that retailers do not mark down there products.
Personally, I think it's BS because instead of the market determining the retail price it is set by the manufacture, which often results in a much higher price to the end user. On the flip side it allows retailers to make full GP on their goods and they don't have to worry about bottom-feeders price shopping.
But yes, it can and does happen in all sorts of industries.