Bread machine flour is strong flour with a small amount of backing agents, thats all i use for Pizza, breads, cobs and Roti's
Laucke make "Wallaby Flour" in a 5 kg bag (approx $16-18 ), should be able to get it at most supermarkets, This flour is straight white strong flour with no additives
Laucke Wallaby Flour is a flour with characteristics that have been tailored to provide doughs that are capable of successfully meeting a wide range of Bakery requirements. Doughs produced are of good water absorption and balanced; being strong, extensible, and tolerant. Wallaby flour is used universally in the bakehouse and patisserie for yeast raised products such as standard white bread, bread rolls and most pastries, and specialist products such as pizza, hearth and flat breads, bagels and croissants. It is also used for most heavy fruit cakes, cream puffs, yeast donuts, buns and in fact for any product which requires a well balanced and tolerant dough.
have a read of their web site, has some excellent info on flour, backing etc
http://www.laucke.com.au/Default.htm