Hiya mate ,
Yeah they came from ebay

thats the only reason I bought them as Im not paying retail on those fookers

£650 each caliper
They do come up on ebay from time to time as a month ago I pointed a mate out to another pair which he won and loves em too
If you do want to buy them new then I use Harris Performance
www.harrisperformance.co.uk
They truely are AWESOME brakes mate and the only caliper better Brembo make are found on MOTO-GP Bikes which are just the mono bloc version of mine to stop caliper flex , I use mine with the proper racing brembo master cylinder/lever and I have NEVER needed more than one finger to stop at most 2 when I try stoppies but thats more for feel than lack of power
GET THEM YOU WONT BE SORRY