1. Cheap shot 下流手段

The candidates ended up taking cheap shots at each other during the debate.
辩论中，候选人最后都用下流手段攻击对方。

链接：

beat under belt: 源于拳击运动，击打对方的下三路。

2. Cheapie 便宜货

It's a cheapie, I spent only a couple of bucks on it.
这是个便宜货，我才花几元钱买的。