Use it to stress something is a bit more than usual without exaggerating too much.

Slight Overstatement

Reflects personal opinion; what's 'big' for one might be normal for another.

Subjective Perception

The phrase sometimes implies a positive quality or benefit.

It implies a comparison to an unstated average or expected price, size, etc.

Can be used to caution about spending or to set expectations about cost.

Often suggests a mild disappointment or that something isn't as good as desired.

Its meaning changes with context: small in size can differ from small in range.

Used to gently suggest something is less than average without being blunt.