My players want to buy a car (equivalent to a van). Often, they are under disguise, therefore wothout the heavy weaponry. The van could be a away for them to have the heavy stuff near by if it is necesary. But where can I find the price of a vehicle?
One game I played in we had rented a car from the spaceport for a few hundred thrones for a week. Just make sure you get the insurance, it's well worth it.
I would go for around 1,000 thrones for a poor, maybe common, quality vehicle. It would really depend on the planet your party is on and relative availability.
Also, my psycher want to be a spacecraft pilot. Is it possible to buy one? If so, what could be the price
Spacecraft would be out of the range of normal purchases. They would be hundreds of thousands of thrones in cost.
Theft, requisition from their Inquisitor, forged documents, spoils of battle, or access by situation would be your best bet.