Ads from Book Depository claim "FREE DELIVERY" on all books mailed internationally--but it's not really free.
Here's one example: Amazon says the retail cost of this book is $14.95, and the Amazon price is $13.46. If you spend $49 worth on qualifying products (including this and most other new books) at Amazon, shipping to Israel is FREE.
Meanwhile, Book Depository offers "FREE" shipping on the same book but sells it for 95 shekels, which is about $30. That's about $16.50 you pay for "FREE" shipping, or $15 above even the retail price.
How is this sort of false advertising even legal?