Mightyvelo price for the R20 is a sale price (probably because Singapore is locked down due to covid19), normal price is about 2600USD not so far from the Pacific Cycles webshop price on which all products are at list price.

Tried to buy some components from Mightyvelo, shipment to Europe is incredibly expensive, E-walker also in Singapore has much lower shipment prices. The R20 is not on their webshop but I guess they have it too.