When it doubt, buy it. Costco will not over-charge you.
Case in study: Food Wrap by Kirkland Signature - $8.99 (double pack)
At first glance, you might think $9 for 2 rolls of food wraps is not much of a bargain. But take a look at this.
If you are lucky, you can buy a roll of food wrap for $.99 (from a 99 Cents only store). This roll contains a 100 SQ. FT. of inferior quality plastic wrap.
With Kirkland Signature's Food Wrap (double pack), you get 1500 SQ. FT of high quality plastic wrap. That's 166 SQ. FT per a Dollar.
So, with same amount of money, you get 66% more of high quality product.
But, that's not all
Think about helping environment.
In order to get 1500 SQ. FT. of plastic wrap, you need to buy 15 of $.99 rolls. With Costco's double pack, you are saving raw material to package 13 rolls.
Everyone wins with Costco.
So, when in doubt? Buy it.
** One problem with Costco's plastic wrap is that it will take extremely long time for me to finish up 2 rolls of these. It took me 2 years to finish 100 SQ. FT. roll. So, mathematically, it will take me 30 years to finish these up. I will be in my 70's when I'm done with these. My plastic wrap can out live me. Haha..
I guess some people use a lot of plastic wrap. I don't. I always try to use containers with tops instead of putting a wrap over the food. I try not to use plastic wrap as much as possible. They cost money.