Brick and Mortar stores purposefully hinders your internet connection so you can't compare how much cheaper it is other places.

Idk how "obvious" this one is, but recently I was shopping in person at Petco and I wanted to see what the price was on Petco.com and on Amazon/Walmart to compare.

The internet was slower than molasses on a grandma snail and impossible to check the price in store. Once I left the store, my internet was working fine.