The entire site is still available at http://archive.monograph.io/
However, they aren't adding new projects.
Their first year lessons learned from about a month ago : https://medium.com/@moeamaya/agency-year-1-make-all-the-mist...
They are pivoting to an architecture rather than maker/engineering focus: http://beta.monograph.io
EDIT: Questions for Moe -- You said that Monograph is a side project and was difficult for two to support at $2500 / yr.
1) That seems like a fairly low yearly cost. What was your backend, and are you pursuing lower costs with the new beta or is it just a better / more appropriate market focusing on architecture that should be sustainable?
2) How much of that was advertising?
3) What is the main-project of which this was a side project?