Are there required book or other material requirements for the 6 specialty courses?

I am compiling the costs for working toward this credential and if the numbers are within range of my budget I will consider purchasing the courses.

So far the only prerequisite I need to take is the Intro to Healthcare Tech and Info Systems for $299. I see this course requires a textbook that is to be purchased separately and it is expensive on all fronts. If you know any cost saving tips or resources please share.

Are there any hidden costs or required textbooks or materials for the remaining 6 specialty course that y'all know of? I'd prefer to have full disclosure, the more data the better so I can make an informed decision.

Note 1: This is through AHIMA's CRM Certificate program.

Note 2: So far the total not including textbook for 1 pre-requirement ($299) and 6 specialty courses (325 each) = $2249. Well within budget.

So is there any other cost to account for?