SLK 200 K – per and counter

To all SLK 200 K – W 170 drivers or those who have an opinion about it! I find the car simply beautiful and it is a lot of fun. So my dream car, because as BJ 2001 also affordable for me. Now stands with a dealer near me this car. BJ 3/2001, so Nachmopf, scarz, red/black leather seats, switch, 70,000 km, 15,000 €. I would like to exchange my A-Class ( A 170 Diesel, BJ 8 / 2001, price approx. 6400 € ) against the SLK. But I drive about 30,000km per year. We ( 2 persons) n The cost of gas is about twice as high as that of my A-Class. I don’t think the other operating costs are soooo much. What would you do. Thank you for your opinion! Cioa Jörg