I decant my Mekong into empty Gilbey,s bottles as they fit into the freezer better- (Drink Gilbey's on pension day !!)

They both cost 320 baht a bottle.
Recently I have found that a 750 ml bottle of Mekong will not fit into a Gilbey's bottle

Checking on old empties show that Gilbey's have reduced their bottle size from 750ml to 700ml but the price stays the same - sneaky bastards!
The Shop where I get it didn't know and will ask their distributor why they buy it from them at the same price !!
Will follow up when /if I get an answer !!