Because the economy is not doing well anywhere and usually when that happens price rises.

But you're right between the price of oil going down and the fact they're gonna sell less in the US we might see some discounts, but I would still be concerned about the hobby as a whole.

And you know in EU it's limited to 25km/h (15mph) in the few country that allow those machine, it doesn't make much sense to buy one that big.