Thank you for your suggestions. At Path Press we already considered these options. Our idea is to print for free distribution and make them available in the monasteries around the world. (Also I will enquire with FS Sangha for printing.) Even Path Press could in theory print the book if it had enough donation.
Monks are actually already involved in Dhamma publications. It is quite common nowadays. But money issues are depended on the generosity of laity.
Bhikkhu Hiriko - Ñāṇasuci
The experts do not say that one is a sage in this world because of view, or learning, or knowledge, Nanda.
I call them sages who wander without association, without affliction, without desire.
The Buddha, Sn.V.8.2 (1078)