What are you interested for, only SP31 or SP20E as well?
I am in Armenia.
I have written above about price. You can check it at Spondoolies-Tech site.
I've paid $2075 + $300 shipping for SP31 and $479 + $102 shipping for each SP20E.
So price will be
SP31 - $2375 + shipping cost
SP20E - $580 + shipping cost for each
If you accept this price I will provide any evidence you want.