There are a few reasons for dropping the top speed but the primary ones are safety, stability and torque trade-off.
Firstly, 20 mp/h (32 km/h) is faster than you can run. It won't be powder snow or necessarily soft sand or similar you fall onto. If you do fall (or bail) onto hard ground the wrong way or run into something it is fast. This said, we also understand that the speed is part of the attraction as it is with all similar products.
Making it go faster is very simple however there are other issues to take into account. The main reason is to do with 'caster' / trail and mechanical oscillation (speed wobbles). It's necessary to increase the turning resistance as speed increases in order to engineer this out completely. There's not low cost way to do this, but we may look at in the future.
Secondly, it fast standing up for most people in most circumstances. We know there are some customers who'll want to go faster. That will rarely be the case off-road because the surfaces are uneven. It's not slick like snow, concrete / road or water. The comfort going fast is relative to the vibration from the surface.
There are other technical reasons for reducing the speed, but they aren't related to 'not possible'. This trade-off is torque and speed. We want you to be able to go uphill which means you have to make a trade-off in the system. It takes 5x the torque (and energy) to go up the maximum hill on a soft surface as to go top speed on a hard surface.
We think we've got the balance right for now.
It depends where you are. We will be in serial (mass) production from late August 2018 at this point. For distributors that have orders in by then, they will get product by late September. Whether or not we are available in your country depends on distribution being in place and a dealer near you. If you want to make sure you have one available, walk into a local store (ATV / UTV / extreme sports / board sports / snowmobiles / electric bike / etc ... your choice) and tell them you want to buy one from them. Point them to our website and we can get the process started by having them tell us their preferred distributor who may or may not be already in contact with us.
At the risk of being incorrect, we can only estimate the end user price based on probable dealer and distributor margins. Our estimate for the US, where we have a reasonable handle on the value chain and likely import duty, is around US$3,999 plus taxes. If you are outside the US, it depends on a lot of things including your local VAT (or other taxes), import duties, and other things. Mostly likely it will be more than this, but we can't give you a definite number as we can't control dealer pricing.
Unfortunately, we can't as our insurance will not cover this. We will get distribution in place as soon as possible. If we know where you are, and you are subscribed to the "I want to buy one now" email list, we know you are waiting. If you aren't sure, modify your email subscription using the link in the top left menu.