Hi,
We've published 2 relatively substantial booklets and 1 very small booklet
1 of them is on sale at BooksActually and Basheer.
Printing costs in singapore are crazy, and breaking even on them is tough. So if you're intending on making money from book smake sure you already have a list of people who want to buy it.
Apart from that it's enormously satisfying to get a book printed.
For smaller print runs you can look into digital printing (less than 1000 pieces)