Dear Mr. Grove, you are right, it is dropshipping. This is not a secret, but made quite clear on the shipping page of the shop.
Nevertheless you have some advantages, which is a better personal service, a nicer shop-system with profound descriptions so that you can comfortably find what you are looking for .
I mean, think about it: you found the article initially in my shop and not elsewhere. And obviously you do like it, because you keep it. So the whole thing must be worth the price for you, or not?
The sense of dropshipping is the same as with every other shop - to bring the buyer what he is looking for. Only, I am not first importing from the manufacturer, but they send it to the customer directly.
Concerning the price you paid, 80% more is very far from truth. I am only selling quality pieces and they have their price for me, too. Of course I have to add some margin for my shop, my time - and my living.
I love what I do and the sense of the shop is definitely not to "outdig" my customers.