Ah, we utilise the same resource. :)
Just having a flick back to Dreamwave's era...
their top two titles selling about 140,000 copies each in just one month, compared to IDW struggling to get 10% of that per title (somewhere around 10,000 with most TFs issues).
As bad as Dreamwave turned out, they certainly knew how to sell a comic, as the sales number of that first Gen1 series of theirs climbed and held, instead of dropping off from the first issue (as most do).
(the thing that bugs me though, is both DC and Marvel produced almost-free comics, that they had to sell at a huge loss, just to make sure Dreamwave's Transformers didn't enjoy boasting rights of #1 each month)