Therin of Andor wrote:
Can't say why the Encyclopedia didn't sell well, but right now comics appear to be on a lot of people's radar, so they stand a good chance of doing well.
The Trek comics from IDW are often rather hard to find, and many have been scathingly reviewed. AFAIK, they are not selling the kinds of numbers as the Marvel and DC versions of the 80s.
To be fair, I don't think any current comics are selling near their '80s or '90s level.