Lets start with some of the bad points about the web: The biggest has to be the fact that you cannot try anything on. Receive the items in the mail after trusting a photograph and simply hope that the clothes fit. If not then its a trip to the post office to mail that package back.
Another problem is security, sure i can trust big sites like amazon etc but what about smaller sites, do they have a secure connection? are they legit? where are they based?
There are many scam stores or stores that sell fake goods, when dealing with somebody remotely how can you actually trust them?
Now compare all this to the humble factory outlet. You can walk in and try clothing on, see if it fits, flip through the rails and find hidden items. You can certainly trust the store and trust the brand, everything is accountable and you can certainly take things back if you have a problem. You have help in the form of a sales assistant and a human face to speak to.
Sure there are some bad points like older lines but all these factors make outlets a great place to shop.
Both outlet stores and online stores have sales yet an outlet store is usually on sale all year round.