Since it bagseed, chances are that they won't grow at all. They might be old, crushed, etc. If you are gonna grow, why not just take decent stock and do it right?
LOL are you kidding? I have grew many a plant from a mere bag seed.

I do agree with buying seeds and getting a good strain but to say that
a bag seed will not grow at all is preposterous.

My out-door crop is always bag seeds I have collected through the
prior year usually out of the best smoke I have gotten. Its best to
take your seeds from buds not the ones floating around in the bag
and give them a gentle squeeze to see if they pop easy if so they
are not worth a flying fuck (dried out or cracked).