Lucas-TRW-Girling is a huge automotive group in Europe. Made in EU wherever the overheads are low hence the price is cheap. Formulation is european OE pads similar to textar pad material found in bmw, mercs etc with semi metallic material with plenty of carbon as "lubricant" thus plenty of dust and some wear on the rotors. Good pedal feel and works from ambient to 550-600C ( but that's their operational range, and expect big dropoff of co-eff of friction from 400C onwards ).

I buy my Lucas pads around $60 a set from my fren's brake shop in Perth, don't think they sell Lucas at Supercheap, Repco,Conventries, Autobarn etc. But you should find them at any specialised brakes supply shop in your city. I've seen them for sale by a forum member in the parts for sale section ( he wanted $100 a set, used btw ) so they can't be too hard to source.