I think , if you are stuck with In class training then
the cheapest option is whenever you go out of country
you can take the class there.
For example in India it costs only 400$ per paper
compared to 2500$ per paper here.
Iam telling you my experience I live in Uk in here OCP dba cost about Â£8000 pounds but i did all four courses of oracle 9i ocp from pakisatn karachi one of the oracle authorize university only 30,000 rupes which is equal to Â£.300 pound would you belive how cheap in pakisatn.