Nice to see the barebone is out
As for the switch pricing, from MY understanding, companies that price things in this manner (some switches costing more) do it because of order quantity.
As we all know, cherry sells to distributors/manufacturers in large quantities, the larger quantity the order, the better chance of scoring each switch for a few pennies less (say on an order of 50,000 switches you may get 8 cents per switch, as opposed to an order of 10,000 switches being 10 cents a switch).
I'm sure they have based demand of switch types off of the V1 sales, blues and blacks are usually in very high demand. Browns as well, but reds and clears are not as popular sales-wise (while clears are highly sought after by some keyboard enthusiasts, blue/black/brown are the most common switches among most people who buy mechanical keyboards from what i've seen)
So, instead they could just charge an extra $10 to the base price and have all switches cost the same, which means they'd make a bit more profit off of blues/blacks, but doing it this way means they can sell the boards with their highest quantity switches for a slightly cheaper price, to reflect the bulk discount.
Not 100% sure if this is true, but this is generally how things go in the wholesale world. I used to work in importing manufactured goods from china in very large quantites, and they most certainly price orders by the amount of pieces. Generally when we would get back a price estimate sheet, they would include quotes for 10,000 50,000 100,000 piece orders, with the prices getting gradually cheaper with more pieces.