What you have to look at though is the current trend too. The makers are also catering to the economy as well. The trend for a while now has been in the budget synths and budget workstations. Think about those numbers too.
Good examples:
Roland Juno-Stage
Roland Juno-G
Roland Juno-D/Le
Korg Triton Le/TR
Korg M50
Korg X50
Yamaha MO6/8
Yamaha MM6
The soon to be released Roland Juno-Di (that's sure to be a big hit and a big seller too). All these models have had very strong sales. The keyboard makers catered to those cash strapped individuals.., and due to economic times "cash strapped" isn't just a struggling teenager or college student. Well seasoned musicians (full time working adult and parents with homes) are buying the budget models too.
That's just the current trend. The budget synth/workstation outsells semi pro and pro arrangers here in the USA by a huge margin too.
_________________________
GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.