ShareTweetShareShareEmailComments(Editor’s note: This post has beenupdated with new information about Costco’s plans for the United Kingdom, Spain and Sweden.)This is good news for American and British expats who like a bargain … and who like to buy in bulk.Costco – arguably the most popular retailer in the United States and verifiably the world’s third-largest retail chain – is continuing its aggressive push into Europe with plans for new stores in Sweden, Spain and the United Kingdom. This all comes after Costco announced a plan in 2013 to expand its operations by opening 150 warehouse clubs globally, with a specific focus on previously untapped international markets.A concrete indication of the retailer’s ambitions comes in the form of a huge new Costco fulfillment center – its first logistics center in Europe – in Torija, Spain, 75 kilometers northeast of Madrid. The project is designed to be 140,000 meters squared, or 1.5 million square feet, according to media reports. That’s abo…