Wal-mart just changes the wrapper on their items to make them look different and to make the consumers believe they are buying something of better quot;quality.quot;Sandwich bags, aluminum foil, paper plates, forks, spoons, soap, greeting, birthday, etccards, spices, snacks, trash bags, batteries, canned foods, candy, juice, candy, school supplies, cleaning supplies, toothpaste, soap, toilet paper, etc.
It all depends upon the R-value per inch of insulationThis depends upon the insulation materialSome materials have a higher R-value per inch than othersYou're just going to have to do some research to find out which insulation material and type is best for your particular application.
Both are good However blown in insulation is much cheaper and is good at filling every little nook and crany in your atticThey R value is the same wether you have roll insulation or blown in That is all that matters.
YesI also notice that Best Buy does the same with electronics as opposed to those bought online, except the Best Buy ones cost ten times more.
