In the shop the fridges are usually not sealed, or not very well. The armer ambient air hits the cold can so you get condensation. Also the ambient air is moist. In your home fridge, it is sealed so no ambient air can hit the outside of the can.
Possibly, but it's probably a bit cramped in there for a prolonged session.Ah, so if I keep my fridge door open I'll get condensation on my beer cans?
When I buy a couple of tins of lager from the shop, they look lovely and cool with little drops of condensation on the tin. But when I put them in my fridge, within a couple of hours all that condensation is gone, and it's not as cold. However, when, I put one in the freeze, it started to freeze solid. I thought the alcohol might have saved it from freezing, but it didn't. How do I keep my beer appropriately cool?
Sounds like too much thinking and not enough drinking on the OPs part.
Drink whiskey - you don't worry about "cool"
In fact, drink enough and you don't worry about anything
I use whisky stones...love them...
Are you not mistakenly confusing the condensation effect with the actual coldness?
Condensation is an indication of moist air and can occur when there is a temperature difference. It is likely that your fridge is as cold or colder than the shop drinks chiller but is just much less moist due to design and less regular opening of the door. Also, the wet cans may feel colder to the touch as the water droplets will help form a more efficient heat transfer to rob the heat from your hand and transfer it into the chilled can, thereby giving you a cold aching hand and beer that warms up more quickly than a dry can!