$250
Redline Monocog 29’er 19 inch single speed | Bicycles | Gumtree Australia Darebin Area - Northcote
Just went to check this out as its just up the road - I passed as its got no ways to mount guards/racks but its not a bad deal. Its pretty beat up cosmetically.
BB7 (or maybe BB5 brakes) they need some adjustment or at worst new pads, Thomson seatpost, WI free wheel, front wheel is an XT to a salsa delgado.
Be a solid commuter/hack around.