Business on a Kras Air TU-154, Russian internal flight.
Problem was on boarding there was no business section, the entire a/c was economy...
Explained this to the young lady who allocated me 'two' Economy seats, so my laptop had its own seat on a quite crowded flight. I even took a photo for posterity. Other Passengers look bemused.
If I'd asked for a refund later I might have got it but travailing the Kras Air refund process would have been more than it was worth.