I recently noticed that bookdepository (belongs to Amazon btw) has different prices depending on your region. In other words, their "free delivery worldwide" co

I recently noticed that bookdepository (belongs to Amazon btw) has different prices depending on your region. In other words, their "free delivery worldwide" cost is being hidden behind the different prices per country. So, by using VPN and ordering a book let's say from the US (even though you live in Europe) you might be able to save quite some bucks. I saved $15 recently when buying a technical book. Also, in abebooks.com you can sometimes find textbooks at much lower prices, even if you include the shipping fees compared to amazon/bookdepository. Most likely these textbooks are much cheaper because they are supposed to be sold only in India. Still, some sellers ship them all over the world. You can find a multitude of free and new books on b-ok.org, but I guess it would be illegal to use in most jurisdictions. Lastly, wherever I've bought a book from, I always refer to Amazon.com for reviews.