The problem comes in in distribution.

Today, you could have the calendar printed, or you can print it on a high end inkjet. Which makes costs easy to tailor for your market.

One easy way to do this is to use indigogo or other crowd funding, and basically you are exclusively selling to pre-orders.

Since you are where you are, the models are probably very inexpensive, so it will be easy to recoup your costs. However, selling a lot of calendars usually takes some drive and product placement.

Good luck