I've been trying to find the cheapest copy of a book I need online (As you do!) and it seems the cheapest copy is with a supplier called "Booksplea.se". Now the website page header shows the company name as "Books Please" and claims to be a UK based supplier with a UK contact address and can supply the book in 3-5 days as they may have to order from the publisher.
Now I thought that any web address ending in .se was indicative of a company based in Sweden. My question is how can a company that's apparently based in the UK have a .se domain name? I know you can host a website from anywhere in the world, but it just seems a bit odd and perhaps I need to avoid dealing with them. They have attempted to provide an explanation in the small-print on their website but it's not convincing and makes no mention of Sweden.
Some countries, including the UK and Sweden, allow anybody to buy a domain name under their country code. For other countries, e.g. Australia, you need to have a company in that country in order to buy a domain there.
Booksplea.se have tried to be "smart" in using a ".se" domain because their name happens to end in "se". Unfortunately this has backfired in your case as it has made you trust them less. I would apply the usual checks and balances but not let the se domain worry you too much.
Booksplea.se is the trading name of Southport-based Aphrohead Ltd.
They're a legitimate online bookseller but not particularly well-reviewed. (Click '8 Google reviews' on the right of this page: http://tinyurl.com/lh8edkz )
The use of the last part of a domain name to make up a word is increasingly common practice. For example Youtube uses youtu.be for links to videos starting part way through but I very much doubt that they're hosted on servers in Belgium!