Well, I could probably go on forever on this topic. Things that surprised me were the fact that the 2 for the price of 1 deals are still going. Why we don't have these in Australia is beyond me.
I find it hilarious that walking into a 7-11 here, I see Gatorade 600 mL bottles for $4.50. In the USA if you buy a 6-pack, they are 99c each. Oh, and they come in 4 different sizes (600 mL right up to a gallon - 3.78L), compared to our 1.
Another thing I noticed is that while you can go into a supermarket here and buy a single can of tuna, for example, in the USA most things are sold bundled. You have to buy a 3-can bundle over there - no single cans sold at all. If you want a can of Coke, you need to buy a 6-pack.
Restaurants are so much cheaper too. Here in Aus your typical main course at a decent restaurant might set you back $30-$35. In the US, it's about $15-$18 (however you have state tax on top of this, plus a 15-20% tip). The consolotion is that the meals are significantly larger, so you can take food home and have a 2nd meal later.
Other observations:
-Liquor is sold in the supermarket itself, rather than a separate but attached store. This has always been the case, but people here in Aus. seem to accept having to buy it separately, for some reason.
-When you pay with a credit card at checkout, you don't sign a little piece of paper like you do here. You sign a digital pad. We are really behind here. Seriously what decade are we living in where you still sign paper? lol.
-Sizes are larger (duh). I found it odd that you can't get Kraft peanut butter there. It's all Skippy, and it comes in jars as large as 1.3kg!!
I really miss the food there. Corn Chex and Cheerios are better than any cereal here. They have 45% daily iron content, while most cereals here seem to be 25% at most. Nabisco teddy grahams are better than Arnott's tiny teddies, and red fruit punch Gatorade is better than the "tropical" flavour here. Even Sprite and Fanta taste better there - they don't seem as heavily carbonated and not as sickly sweet (cane sugar taste) as they are here.
The Nutrition Facts on US food products is also superior to the labelling here. Over there, the information lists vitamin and mineral content (if any) for all food, while here, only cereals do this. For example, teddy grahams in the US have 10% daily iron content, while I have no idea what the content is here because it's not listed.
You still sign for CC payments? Don't you have a PIN? :P