Originally Posted by john_3.0s

I spent about the last 10 yrs designing aircraft installations, avionics equipment, conducting flight trials, EMC testing, modelling RF systems etc and some of that time was putting right some mods BAE did (a lot of subbies got rich of that job) but that's another story. I do know what materials cost its an important part of my job and I didn't suggest you didn't know what you were talking about. £400 sounds closer to the mark but my original question was based on the 500-550 that the looms on ebay are listed at. Still struggling to see it myself, guess we will agree to disagree. The bottom line I guess is that anything is worth what people are prepared to pay for it!