Gifting: visible price tag, classless and tacky or OK?

There are 2 trains of thought I have been told about that. When I was a kid people did not leave any indication of the price on the gift. I know my mother never did; though now I suspect she did so as to not let on how inexpensive the gift was since we were poor and had no long gift money. Other had agreed with her and said to leave the cost of a gift on the gift where it can be viewed is tacky. Either you are trying to grandstand by flaunting how much money you have spent or can spend on a gift or it will show the receiver they were only worth a gift of $8 while others you know –and they too- will see that you $25. $55, and more gifts to others. Some think absolutely the opposite don’t know if that is a new trend or just one I didn’t know to HAVE the price of the gift known. Then the receiver knows that the giver thought highly of them to get a quality gift and not some flea market item and passing it off as some exotic boutique item. What do you do or think, have no representation of cost or let them know how much you spent on their gift?