I think they dont do good marketing.
Because I am a beginner with lazarus (I did Turbopascal 30 years ago, but never delphi), I wanted a good book for introduction.
At amazon, most books about lazarus are "currently not available". There are some offers, but these where not what I wanted.
I dont buy a book, if I cannot have a look inside, if I cannot see the contents and dont kow the number of pages.
Finally I found "Learn to program using Lazarus", which was what I wanted. Now, there was a previev offered, but the link was broken and so I did not buy.
At some miracle day, the preview (which was hard to find) worked, I looked inside and purchased the pdf, which I have not regretted.
Possibly they should offer their books via Amazon print on demand service, where amazon does the logistic the advertising and offer the "look inside book" and does the print (on demand) and the shipping and has the cost of web traffic and administration. I think they could reach a much larger amount of customers there, beause the offered content is good.
If I look to this upcoming new book (which I want to get when ready) I shudder a little bit over 25€ "flatrate shipping". For this price I can order overseas by priority air mail!
For 25€ I can get a 250 sheet (500 pages) Din A4 printed and shipping is free here:
https://www.drucksofa.de/preise/Finally this was the only way for me to get a printed copy of "Learn to program using Lazarus"
I would be glad to support them by purchasing their offerings, but they make it difficult and expensive for me and other customers.