This practice is known as "Showrooming" in the retail industry. I dont want to get on my soapbox about all the reasons it isnt cool, but to think that things are just as easy as adjusting pricing is a bit naive. Also, though they may not stock the item in question, they can certainly order it unless.
Good for you. I have always enjoyed your posts and I am glad you've come to this decision
Has it crossed your mind that there might be reasons they havent lowered their prices? Maybe they have a MAP agreement. Maybe they dont enjoy the margin that Skoak receives. Maybe Carmina has a pricing strategy for the US different from the EU. Regardless, I have great news: You dont have to buy from another retailer. If you do choose to go to a brick and mortar store for the express reason to use their services in order to buy from another vendor however, I think thats a pretty douchey move. Did you ask them to price match? Did you give them the opportunity to make the sale?
Its no different than going to a lawyer, having them prepare documents and do research for you and then paying another attorney for the work. You can try and justify this to yourself however you want, but the bottom line is you are hurting someone's business. I'm sure the guys at Skoak would feel the same way about people doing it to them.
It isnt illegal and no one can stop you from doing it, but I think it says a lot about people who do this kind of thing. Happy shopping
In any case, I'll now wait for Leaves' explanation as I'm positive he understands this far better than you or I.