Thanks @HD-OZ, I emailed the team on the address you provided and got the following response, which I’ll re-post here for the benefit of others who are wondering the same:
We don’t know what the price will be in 2019. We hope it will stay the same, but that will depend on our suppliers as well.
Once we start shipping, we’ll be shipping by order date, so those who ordered it earlier, we’ll get the phone sooner. We’ll probably produce enough to cover all pre-orders in the first batch.
Campaign ends in two days, but it will be possible to pre-order the phone even after that.
So it sounds like it’s a “first come, first served” model and it is possible to pre-order even after the end of the crowdfunding campaign. And the price is at least not meant to go up significantly.