16GB of RAM is $89 retail at the local Microcenter, in 2x8gb sticks. Not seeing how adding a bit more RAM would quadruple the price. Pine sells a 4gb RAM sbc for what, $59?

Edit : "Pricing will remain the same with the 1GB model priced at $24.95, the 2GB model at $34.95, and the 4GB model at $44.95."

QED.