I go for random boxes as well.

Free shop was changed some years ago to be completely random, I still remember when you could see the items you were getting, or when they were alphabetized so the csc for example were all on first row, now I just pick randomly :P

Nope, its just random for me.

I pick around in the middle/below.

I always pick from the top row, not necessarily the same box :)

Random, I sometimes scroll down a bit or just pick one on top.

When the free shop opened I used to scroll all the way down the page and pick one from the last three rows. It tends to take small forever to scroll down the page though as the shop is quite well stocked at times so I now pick one pretty much by random after scrolling down a bit. :)

Random