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.
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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.