I don't know that it is for online purchases. My wife is buying clothes and shoes off Amazon lately and we are on our third return for one pair of shoes because their size guide online doesn't correspond to what they send us at all. That's a 200% return rate on a single item, and that's only if we get the correct one shipped to us this time. Non commodity items have turned into a major crapshoot online.

Online shopping has spoiled me for convenience compared to shopping in person though. What's happened is that I've just ended up not buying as many things because I was trained to expect convenance and then it was taken away