Heating Engineer - apprentice costs

A bit of advice required.

We needed a heating engineer to replace two pieces of copper pipe that had started to leak. Probably no more than two hours work but received a bill for 5 hours x €63.00 per hour which i find extremely expensive compared to a UK heating / plumbing guy at circa £250 - £30o day rate.

Anyhow, he's also charged us €180 for his apprentice attending!!!!!??? Repair didn't require two people. Is this normal practice for German trades?