would you pay 10 bucks to ship a 2.80 cent part

[Anderson]

Freight is freight. It doesn't matter if the part inside the box is $2 or $200.

Did you call to place the order or just try to order it online? Online ordering doesn't always have an option for USPS shipping, it would be very difficult to calculate exact shipping based on the weight of each individual product, it's size, your zip code, etc. It's far easier to just have a flat rate. However, if you actually call to place the order they might be able to "downgrade" shipping to US Mail and save a couple bucks.