I book with a Travel Agent in case something goes wrong and then the fault lies with the Agent to fix it or reimburse me. I've told the agent that and she agrees it's a good idea. Last time I saw her a few months ago she said they'd gotten an article discussing the millions of dollars spent on non refundable tickets etc that were booked wrongly and the non travel agent person booking it lost their money.

Just wondering what might happen if there is an accidental error in booking? Could you be left with a big charge?