Prices can vary from new to pre-owned. From $120,000 to $1,200,000.
Typically for the Cirrus SR22 you should budget $60,000 for a new engine and propellor every 2,000 hours.
Fuel burns vary based on turbo and non turbo aircraft. If you want to go fast, you will pay for it in fuel and that could be as much as 18 gallons per hour in cruise and do 178 KTAS.
If you want to fly efficiently and in no rush to get anywhere, you may consider flying at Carson Speed Vc. Which is 31% faster than glide speed. This is typically around 50% power and you can lean a normally aspirated engine to 10 gallons per hour and achieve around 130 KTAS.