Is there something you bought that you really regret?

A natural way to answer

I once bought an expensive coat that I almost never wore. It looked nice in the shop, but it wasn't really my style. Looking back, it was money down the drain.

Key phrases to use

• gathering dust — left unused for a long time“My guitar's just gathering dust in the corner.”
• money down the drain — money completely wasted“That subscription was money down the drain.”
• in the heat of the moment — while feeling very excited or emotional, without thinking calmly“I said yes in the heat of the moment.”