Hi i can offer you leveling for your druid, since i only do 90-100
Time from 90-100 : 5-7 Hours ( depending on if you got heirlooms or not)
Price : 1.500 fg with heirlooms, 2.200 fg without heirlooms
I would like to do the dk too, but i have no idea how long it will take from 85-90, however price and time from 90-100 are equal
Pm me if you want to discuss about dk 85-90 pricing/time
Other than that, i do this all by myself as fast as i can, i have done like 40+ 90-100 already and none of these took longer than 10 hours
Regards