There are a lot of assimilations where the member did not earn it the old fasioned way.
I think there are several levels of thought here and it is more of a grey area than many have opined.
I personally crunch all my WU's with my own systems and no one elses. I always have, for 32 months now.
My WU's represent the use of my systems, my time, the money I have spent on electricity and bandwidth etc...
Some may argue that using work, school or Gvt computers might be unethical.
Someone else is paying for the hardware and software and electicity and bandwidth, and you are benefitting your personal seti account at their expense. This is not my personal opinion, but I can see an argument for this view.
There is an argument for and against everything. Obviously $200 is very little to pay for 23K WU's. It would take about ten XP 1900+ systems 300+ days to produce the same. That would cost a lot of money in terms of hardware / software and electricity, not to mention time to admin it all.
At that rate my WU's would only be worth about $50.00 - obviously that is ridiculous. Nearly 3 years of seti crunching valued at $50.00 - laughable.
Assimilations come in all different shapes and sizes. No one can add these WU's to their own personal account. They can't count in our race with DSLR.
So to sum up, I wouldn't fault anyone for buying the rights to a load of WU's. WU's crunched are just that, and no more. If someone jettisons their account and wants to try to recoup a fraction of their expenses that's fine with me. Stupid in my opinion, but certainly should be legal and allowable.