I belong to an online group called buzz agent and they did a campaign where I got three of these bags free to try. Well I have to say they are very good and hold up as well. I have used these bags to hold balls for the family picnics. I have put up to five balls with no problems and there was no ripping either. I have also used these bags to store bed comforters. These bags are very big and hold quit a bit.
I have since purchased about three more boxes and they do vary in price depending on where you purchase them. Ziploc also puts out coupons on a regular basis to help with the price. I have paid $5.99 for one box and $3.49 for another so there is a price difference depending on coupons and sales. However, I do think they are worth the price.
I recommend these bags to one and all because of their size they can hold and store just about anything. My cousin uses them to store her pool inflatables for the winter and loves these large bags.
The box comes with three bags that are about 20 gallons in size and about 2 feet by 2.7 feet. That is right very large bags to handle very large jobs. The are made with 100% recycled paperboard. There is a web site that is listed on the box ziploc.com which tells you more about their products and offers specials as well.
Please remember that these bags are not a toy and should be kept away from little kids that may put them over their heads or try to chew on them. These are just general precautions.