INC Glutamine unflavoured 500g $24.99. Claims to be 100% pure Glutamine.
I have Crohn's disease and I use this stuff for its beneficial effect on the intestinal lining. It's also used by body builders and athletes as it supposedly supports muscle repair.
I usually get the 1kg bucket of Jarrow formulas L-Glutamine from iherb (currently about $53.45 AUD + delivery). Before now I hadn't seen it sold locally(brick-n-mortar store) at a competitive price.
Chemist Warehouse currently have a 500g bucket for $24.99.
I have never tried this brand before so can't vouch for its quality. But for the low price and convenience of being able to grab it from the store I thought it was worth a shot. The brand is INC which appears to be exclusive to Chemist Warehouse. I don't know what the regular price is but the label says RRP $79.99.
1KG for 29.99 Locally http://www.bulknutrients.com.au/products/l-glutamine.html