So EB's is who you're ordering from...? Didn't know they would be able to order manga for a person..! How many chapters would there be in an omnibus roughly...?
I order from a bookstore called Bargain Books. I don't know how much our EB charges for manga or if they even have any here in PE.
There are 3 volumes per a omnibus and about 8 chapters per a volume so I would say ~24 chapters per a omnibus.