I just got this reply from them after i emailed for a price on MY 99 UK Wagon.....
Hi there Chris, I've had the lads at the counter check with Mintex and you would be looking at around the £97.55 for the pads and £10 for the postage and packaging. That's based on standard Subaru 4 pot calipers and not retrofitted WRX/STi/special edition or Brembos calipers. We don't hold the items in stock but can turn around order processing in around 2-3 days.
If you need any more info just drop me a line.
Thanks,
Rikki