Bit late to replying but as others have said, pre-covid an LS Swap would've been affordable but since covid lots of people are now using them in projects or now hording them which has driven the cost to a points its not a cheap option anymore. I was looking at LS swapping my VY last year before i decided it'd be more affordable to just sell it and pay a little more for a fully running LS1 powered vehicle. I got my Statesman for what most were selling just an engine + gearbox for and whilst its cost me even more now fixing it up I know its value now since has doubled.