Currently bitcoin mining uses specialized computers called ASICs which are specifically designed to solve the puzzles requires to mine bitcoin. Due to their specific nature, the machines are custom designed and manufactured. As they are not mass produced, they cost more to buy.
I think the price of cryptocurrency is not affected by this only affects the amount of bitcoin being mined. The price of cryptocurrency depends on other factors. One of them is supply and demand.
Mining is evaluated differently in various countries. It depends on the price of electricity from the cost and quality of the equipment.