That is not a regular Gates part number. It was developed by Gates racing division that makes smaller runs. It is blue because all belts made by Gates racing are blue. I think only JAE has this belt and perhaps Kemp in the UK. I just had a discussion with Tim Engel yesterday about this particular belt.
OK, thank you gents, understood - sounds like JAE is the sole distributor.
There are lots of different Gates blue-spec timing belts out there...for different vehicles, typically in the $60-80 range. but I guess the 133 tooth belt of the right dimension is only sold via JAE at around $165 bucks. So it is.