Originally Posted by goldeneaglepilot
I see Bennet Avionics have a MX170B for $1295, if you take into account the shipping cost, and import tax costs to get it into the UK then I doubt you would have much change out of £1500. If you budget about the same for a second hand AT165 transponder then its going to be about the same again.
Bennett Avionics have a less-than-stellar reputation, so I would think twice before buying from them. Their web site is good as reference material, though.
Mendelssohn Pilot Supplies have MX170C for £1295+VAT.