Every whim

Acquaintance with China are working on spare parts. And one of the engineer came up with the "bright" idea:
 - Why are we so expensive bearings they buy, as much for $ 30 ??? !!! Arrange cheaper!
Well, they are the Chinese and ask:
 - Cheaper to do?
They say - How?
They say - Well ... $ 25 ...?
Can say ....
 - A 20 ...?
 - Can ....
 - A 15 ...?
 - Can ....
 - A O_O ... 10 ...?
 - Can ... ..
As a result, without any additional agreement and clarify our engineer received a shipment of disposable almost lyuminievyh bearings ...
That's what I understand trolling ...