i rarely if ever get seeds when i buy my normal weed. I always buy high grade dank, unless were in a dry spell then ill settle for mids. but if i get mids there are usually seeds in them yes.

so it mostly depends on the quality of weed you get, mid grade = more seeds, higher grade dank = no seeds (except for the random loner, ive only found 1 seed in all the sacks ive baught)