My friend of mine is an upholsterer and did it himself. Took about 3 - 4 days depending on the condition of the seats. Mine were not in good nick
I asked him for a price for ye and he said it'll be roughly €500 for the two seats or €600 for the complete 2 seats and both door-cards. Its 100% real leather. He replaces the door-cards with a much plusher, soft material and then covers it matching whatever you want like I shown above and looks and feels way nicer!
To cover the center tunnel I never asked but I'll find out for ye