For your original question, I ordered another stool from Happ back in April and shipping via standard UPS Ground was $15.28.
The stools from Happ ($60) are among my best investments for my cab. I've looked for quite a while trying to find a stool equal in quality to the Happ one that is cheaper, but no luck yet. I've tried those $35~$40 ones that look similar that I could find locally, but they don't hold up very well over time. Of the ones I've had in the past, the bearing doesn't hold up and before long the seat will get a "tilt" or "wobble" to it. Also the padding squishes down and they don't retain their shape so they start to look bad. The seat on the Happ stools is about 5" thick and it uses a very heavy duty roller bearing swivel.
I don't promote going with a more expensive option when you can save some coin on a similar product, but I won't waste my $$ on cheap stools again. Only the Happ ones for me from now on.
