I've checked ebay and other places, this is the cheapest. It's $70 at JB and OOS.
I have this one: https://www.ebay.com.au/itm/304652359884
Personally, I'd pay the extra $10, because it's a better pressing imo and bonus tracks
https://www.amazon.com.au/OK-Computer-OKNOTOK-1997-2017 ONE LEFT IN STOCK
Update: Price dropped to $54.98.
Remastered? Boooooo!