Yeah, yours had got up to well over what I wanted to pay then a bidder withdrew and it dropped right back down to my high bid of something like $5500

Strange auction as you say.
I was seriously considering the yellow one. Didn't look too bad - personally I wouldn't have chosen those wheels, but that's easily fixed. Was also looking at one on tradingpost for $3500 that looked to be pretty reasonable.
The plan for mine is to restore the white 1600 to completely original condition. The blue 1500 I'm not sure about. Apparently the motor (not original anyway - its been fitted with a 1600) has been left with the head off, and has ingested water.
Once I get them, I'll check it all out and decide what to do with that one. Assuming I can fit it all into the shed, that is

. I already have two 1600's (sedans of the 510 variety) and a 180B SSS coupe (610 for the US guys) tucked away in the shed.
The wife is making noises about one of them becoming hers, which would involve converting it to auto as she can't (won't) drive a manual

. If that ends up being the case, I thought an SR20DE and auto may be a nice thing to do to the blue one, although my preference would be to not modify them.
Good new is I'm making the first trip down to Canberra on Saturday to get one
And thanks for the welcome to the forum !!