I must not been to a post office for a long time and haven't shipped things....
I was on a trip and realized my luggage couldn't all fit and anything going to hawaii or leaving hawaii is expensive. So shipping something from vegas to hawaii you guess right was crazy expensive. But it was still cheaper than paying the overage charge so oh well...I'm so naive and forget that you also gotta buy the box, buy tape and pay for the shipping oh boy.. that's why it added up.
This location seems to move quickly and the reps are pretty friendly and knowledgeable. The lady was able to give me price difference on which ever shipping I preferred.