: Key words might be "to retailers", which would merely mean physical
: copies of the comics, although it is a rather small number. I'd
: attribute a greater quantity of readings to people that either buy online
: or download them, but I admit I don't know a lot of the comics industry to
: significant those numbers might really be.

To give a point of comparison, and where I got my numbers:

http://www.comichron.com/monthlycomicssales/2014/2014-01.html

The big guys pull in high five figures to low six, the Star Wars comics pull in about double, but there's still plenty of company where Halo is on the list. That said, I do think that these ratings aren't really that great because as pointed out lots of people buy online or download, and it's hard to say how that skews it--I imagine a larger portion of the Halo fanbase would buy online rather than through your local comic shops. That said for comparison, the Halo Graphic Novel sold around 10,000 which was high for a one-shot, so X thousands doesn't seem categorically worse for Halo.