Spitfite666xxx is correct imo, we get sometimes 40 page issues or at least 32, I believe most comics have 22 pages and another 10 pages with adds... although I could be wrong I believe I counted them before as the TMNT book is normally a longer read then ASM, USM or any of the other books I read.
I believe he said he hoped one day that the book could turn a profit, theres a good chance he is actually loosing money doing the book. I know there are two comic book shops in my city and the more popular one that I shop at to get my new comics; the owner said only 2 people buy the book me and another guy. They are not that popular, take note my citys population is about 115,000 people, although they carry the book at the other store I cant imagine it would be to much more popular there either...
I like the way he has done the book although being bi monthly is the biggest reason it seems to progress slowly, we get 6 issues a year so when you compare it to one where you get it every month or some times 2 times a month (USM) it would seem like a slow progression of story. I think its moving along there are loose ends but they will all conclud eventually while bringing new storys to light...
Also telling 4-5 story's in a book there is only so much room, so they are small doses now it looks like Raph and Leos story may merge... maybe Raph will fight some of those ninjas with leo should be cool to see Super Raph lay the beats to one of them

; although I hope he gets turned back to normal but according to Fugitoid it wont be for a while.