Certain sites send things from China (in the case of electronic items), at a much lower price than the market. That is usually written in the part of terms and conditions that the consumer does not read. In this case, you can take a nasty double surprise:
If there are cases of people who have had to pay customs fees when receiving your product, this search will highlight them.
The problem with buying online is that you cannot see or test the items before buying them. Regular shoppers identify on the web what product they want to buy (by using expert blogs, opinions, etc.) and go to a physical store that sells that Lancome product.
Before buying any high-priced product, regular shoppers check out eBay. It is possible to find a great discount from the liquidation of a store or company.
In addition to following the coupon pages and online discounts on social networks, experts follow their favorite stores on Twitter and Facebook.
Although it is not strictly necessary to have a credit card for online purchases, regular shoppers usually use it. Because it offers the advantage of being able to claim a charge if it has been fraudulent (e.g., they have stolen your card and have bought something in your name), something that cannot be done with a debit card.