I just sent my F700GS seat off to California for remodeling.
I priced it two ways. Via USPS Postal Service and UPS ground.
I found that USPS has a service called “Retail Ground” that is HALF what UPS would charge.
The box I sent is large and light weight. 30 x 13 x 13 and only 8.5 lbs.
USPS wanted 38.50 (with $100 of insurance) and UPS wanted 75
GUESS which way I went.
Be sure to check it out when sending packages (too late for Christmas arrival now though)