I was looking for the same last week they look cool .Had to replace one of my std hd units as a stone when right through and was letting in water .Looked around and It looked like ?180 for a set of mk 4 lookalikes so instead of buying and having another stone break i replaced the old unit with O/Equip bought some New Osram silver stars from the bulbshop link on this site which came with free philips xenon look side bulbs the next day and also stuck some 130 watt mothers in the spots.
Well pleased with the lighting power now even if its only still the std Gti lookig hd lights.
good luck