My friend, I lived in Gruzja for many a year. My local shops in Tbilisi were pretty limited in terms of English-language content, I feel your pain.

For expensive, hard to find stuff, then of course one has to go on price. If you're seeing 50-100 EUR difference then no judgement here.

The original article, however, does not contain that sort of material. In fact, the piece is about low-quality print-on-demand books, which presumably mainly exist for very mainstream titles.

Using examples from TFA, I have no idea why anyone would buy paperbacks of Jack London or Bertrand Russel from Amazon. That's my beef, not your technical hardback collection.