Teach me about Shipping Parts!!!

I accept nothing but us postal money orders,,when i ship some thing,, i ship it FED EX,, i have a FED EX terminal 2 miles from me,, ups has a bad track record or damaging any and every thing,,

after you have shiped a few things you wil be able to guess what shiping would cost,, FED EX has an on line chart,,you weight it and measure it they tell you the shipping rate,,altho it has never worked properly for me,,when i got to the terminal the cost was way less,,,then the online chart,,,

if you use a place that packs it and sends it,,the charges will be high,, way higher then going direct to ups or fed ex,,and may be the deal maker or breaker,,, some parts are cheaper to ship thru your post office,,but i have bad luck with postal shipping unless it is in a postal priority box, when shipping post office,, ship priority,,

fed ex and ups packages are automatically insured for 100.00 bucks,,any thing higher then that will cost but its cheap to insure,,if its lost or damaged you get your money back,,,