$5 a kg !
Hell that would be good even if it ended up being garden strimmer line ;-)

I've had rolls of filement hanging around in mmy workshop for almost as long.
They usually porint quite well - so it's one of those 3d printing issues
You not only have to take into account the machine and how it's used. But also where it's used and basically there are any number of factors.
But wet filament from someone using pla who's not had the machine long - is unlikely. particularly when you look at the machine and all the other things it could easily be.