Bests & Worsts Reviews from Amazon

I ordered two of these, for my husband and for me, as we embarked on a glycemic load eating plan. The size is nice and it seems to be comprehensive. Unfortunately, they are not what I was looking for and I'm returning them. First of all, the introduction states that all items listed are given in 100 gram values. Do you know how much an average orange weighs in grams? How about a cup of milk? Saltines? Got your scale and calculator? It was probably amended from a glycemic index to be used to determine glycemic load. This is probably a more accurate way describing quantities, but not a realistic way in the world that I live in. Not so much a problem with meats, but very confusing with carbohydrates. It allows for comparisons but not an effective way to track glycemic load.