i think they are way worth it. ive dropped it, like slipped it out of my hand on to the ground (carpet) and it was fine so its got a little strenght to it but i dont know if it would survive a hard floor fall. and yeah the seal is the best part. i used to have a glass jar with a cork and it was nice. but becuase i dont need a large mason jar and i dont like tupperware and i enjoy the little style to the jars i thought why not. using the humidifier and the jar together is doing great for my bud. i recommend that any day.