Yes, 7.98 g / bag. They do have a nice zip-top closure. In the past, I've always used PackitGourmet boil-in-bags here
because they are designed to contain boiling water. They're great, except they are a little heavy. The large size one which I use for most meals weighs 13.1 g. Not terrible, but in an effort to save weight this year, I've been trying to slash the weight of my plastic (and use my pot whenever possible). Also, the Packit bags are tall and narrow, meaning that it is difficult to reach inside with your spoon. The nice thing about the Glad bags was that they are wide with a HUGE gussetted bottom. They were ideal for FBC. I think what I will do is try the Ziploc Steam n Bags, which should weigh around the 8 g mark (maybe less?). I'll have to buy some today and weigh them. I just never felt comfortable using regular Ziploc bags for FBC.
Eric, unfortunately the Glad bags you linked on ebay are the x-large size, so too big methinks. Also, they are a bit expensive at $15.
My strategy this year is to use 1 mil heat sealable bags and heat seal them, and then cook in my pot when traveling solo. I'm debating whether to take a pot cozy or not, it may not be worth the weight. The 1 mil bags I just got in the mail (6" x 8") weigh only 1.42 g each. Also, I can trim the bags to fit my food after I heat seal them bringing the weight down close to 1 g per bag.