Ah, seems ups is the cheap snail option
Example, this is for the $20 book:
Ignore the messanger
This is amain, this is what I meant. Albiet I was thinking ups not usps, which might be part of it
Granted those are discounted for their sales, but not by heaps.
Still, that is $180 worth of rc gear which would be heavier and bigger than a book. That said though, they are a much bigger company and would have company discounts on postage or however it works (you know how it is, much cheaper to use couriers or the likes through a business than yourself. Or well, cheaper because you nees to be a business to use the couriers.
But yeah, that might not be viable, just thought I'd see, as said