Why pay half when you can pay double?
Years back I was looking for a Perl course. With QA I could go to London or Dublin (based in the Midlands at the time). Tried to persuade the company to let me go to Dublin. I'd pay for the flights, they pay for the course and hotel. I'd fly the Mrs over and we'd move to a different hotel and have a few days away.
Would have been much cheaper than a train to London and a London hotel. They refused as it was "against the rules". They ended up paying double what they could have done.