Seller shipped with a different service to keep the money

[simplynightbird]

Bought an item with $15.00 shipping cost and it was canada post regular parcel offered by the listing

I received the item and at my surprise the seller shipped lettermail for $3.19

I got totally exploited and this is very dishonest from the seller. Anything to do in a situation like that?

[zee-chan-jpn-books]

How much was the item? Was it still a reasonable price with the $15 shipping? If it is, then I would let it slide and just leave a feedback that says "advertised $15 parcel shipping but was shipped with $3 lettermail". When you bought the item you "agreed" to the total cost already, so how it was shipped should be irrelevant since the bottom line should be that the item arrived in as-described condition.

Years ago many sellers would list their item as $1 with $20 as shipping (as an example), since eBay back then did not charge final value fee on the shipping portion. It was one way for sellers to offer competitive prices. Perhaps your seller was one of them and just never updated their listing? 

[simplynightbird]

It is not irrelevant how it was shipped because it was stated to be shipped as regular parcel. As you said when i paid i agreed to total cost, i also agreed to listing terms for this cost. Listing terms were $15 for regular parcel shipment. I agreed to terms and once i agreed, seller did not respected them, and put the money in his pockets. You can't say i'll ship this way for X, and once buyer paid, ship the way Y and keep the money. Not sure why most everyone defend the situation.