No affiliation. Just came across this gumtree add and that's the cheapest i've ever seen them. Seller has 150 of them...
Home Brew 19 lt Pin Lock kegs,
http://www.gumtree.com.au/s-ad/brisbane-city/miscellaneous-goods/home-brew-19-lt-pin-lock-kegs/1028571463
Price: $ 29.50
Home Brew 19 lt Pin Lock kegs,
http://www.gumtree.com.au/s-ad/brisbane-city/miscellaneous-goods/home-brew-19-lt-pin-lock-kegs/1028571463
Price: $ 29.50