How much variation to expect between seeds of same strain???

So along with all my paid-for seeds from attitude I got a bunch of those UFO free seeds and am wondering if a strain should be judged from a single seeds results? Or does that vary a lot by strain? UFO singles include breeders like G13 Labs, Dinafem, Dutch Passion, etc. So just wondering if a single seed will likely represent a strain well or if each mother can have a lot of variation??? Thanks!

it all depends on the strain and the breeder of course.. i've heard nightmares about say subcools gear being super phenotype prone, meaning you could crack ten seeds and get ten very different plants, same could be said of greenhouse..
some other breeders do try and put in some more work to stabilize their gear before it's released to the public, but sadly it can't be said for all breeders nor all strains..

imo seeds are like scratch off lottery tickets ,
you never know what your going to get ,,
good luck

Good rep seeds should only have a max of 2-3 phenos.
I forget how hybrid system works but I think F1 is stable and max 3-4 phenos and F2 up the less stable they are or the opposite,think theres a S class,I did do loads of reading on it but cant remember the way it works,but reputable breeders should have stabilised there straines by back breeding and cross breeding to 2-3 phenos or they have to state there hybrids,like some will say hybrid F2 75%indica 25% sativa with no mention of who there parents are or history as its a big secret,I say bullshit..

Stick reputable sees and ask people who have grew them out before you buy.

I dont like how some breeders are selling straines for high prices while there still being tested,im testing for a big seed company whos doing just that...

Id like to say you get what you pay for but its not the case,your better off buying cheap seeds off a reputable breeder then expensive off a not so popular.
I think some just dont give a shit as long as they get your money cuz if they dont pop theres nothing you can do about it,youl here storys like mine were people have spens 100s on duff beans that dont even sprout but then that could just be a bad batch but the breeder is normaly really good so it is a game of luck too to be honest,try buying single seeds 3 as a time rather the 10 of 1 straine that could be du and you lose your money is the best advise I can give you.