Good tip flossy63, thanks. In the other auctions I won from this bidder (local clearing out an estate) the (several) other bidders have hundreds of feedbacks so I think in this case it's all genuine. But I've set my notifications and I'll definitely look out for that from now on....
Thanks Donal, I wondered about that but I've won a few of their other $1 no reserve auctions and some were very low so I don't think that's whats happening here... Yeah, a bit annoyed it's revealed my max, but it's only a "placeholder" bid and I might go higher if I need to at the last minute depending on how busy I am at the time and how full the workshop looks...
My autobid was outbid up to my maximum then the buyer removed the opposing winning bid - now my autobid is stuck at my maximum ($20.50) when it was at $1 with no opposing bids - shouldn't my bid be dropped back down to what was winning before the fake buyer forced it up? this auction: https://www.trademe.co.nz/a/listing/4543285193?bof=NyzWrAWr