Total shipping before pp $2010.10
Pp fee 3.9%(int) $89.90
Price before pp fee per keyboard $40.20
$89.10/50=$1.782
And you shipped it with what service then?
Because unless those boxes weigh 3 times more than what I expect they do: 8 boxes = 6-7 boards a box. 1 board at 4 lbs makes each box a max of 28 lbs or 12.7 kg.
This makes each box shipped through EMS (via EMS rates page:
http://www.koreapost.go.kr/eng/sub/subpage.jsp?contId=e1020300) to region three 113,200 won. Multiply that times 8 to get 905,600 won or
$810 (via XE.com).
If they used something more expensive, bully for them, but these half-answers are really not helping.
If they decided "Hey, we worked hard and deserve to be compensated for our time and effort", again, good for them, I have no problem with a business making money to pay employees.
But half answers and snarky quote posts don't help that go down smooth.