I love graysonline.
Built half of my house with graysonline.
When masters backed out of a deal with a timber supplier, I got all my weatherboards for the project for 1/3 the normal new price. Purchased all my chair rails for 1/4 price, purchased all my vj boards 1/3 price, purchased garden edging for bugger all, got a $2500 smeg ex display oven/stove with 12 month warranty for $600.
I just got $13000 worth of vanities (42 vanities in total) when marbletrend liquidated for $1500. I saved 7 of them for my own projects, then sold the rest on gumtree. Plus included in that $1500 were 3 new corner shower screens.
For example I got 900mm vanities that were selling at Bunnings for $430 ea for $50 each on grays, then sold them on gumtree for $280 ea.
I split the purchase with my brother in law and dad. We all got a few vanities to keep for our projects and made $1000+ profit each.
My latest purchase was actually last week, $410 after the auction fees for a daybed