How much more can you sell the 'special' n900 for?

What kind of discount are you going to sell the unoverclockable secondhand n900 at?

Example:

IF you get 1 special n900 every 4 units.

You are going to give $20 discount so people would buy the secondhand n900 that are CONFIRMED to not be stable if overclocked to your spec.

Then you need to sell the special n900 at more than $60 more.

That doesn't even take into account your operating costs, etc...

Now, if you can get volume discount of the n900, that's a different thing... but at that level, these sort of thing is chump change to you that you wouldn't care.