I came across this list of free Saxon 'Samplers' (some more than 100 page of text, ideas, and problems!) for math programs K-HS, phonics, grammar, etc...all free to download.
I think they could be quite useful as supplementation to other programs, give you a feel for what the programs are like, or even just give additional ideas and checklists...
http://saxonhomeschool.hmhco.com/en/resources/result.htm?title=Sample