2005 liberty, needs new cylinder head

Have 131,000 miles on my liberty and have been loving it. Recently engine light came on. Local parts store read the code for me and it was a misfire on cylinder #4. Changed the 6 plugs w/ new stock plugs. Then replaced the coil on #4. Then replaced all 6 injectors. Still had engine light on. Off to jeep dealer. They checked all my work and all good. Then they did a compression check on all cylinders. All good except for #4 which is leaking 20%. Recommended a new cylinder head on right side. Cost of $3,000. This is $2600 for the new cylinder head installed plus $400 for the two test they ran to diagnose the problem. I'm paying the $400 and taking her home to shop these costs. Seems high to me and if the other head needed replaced anytime soon I'd be upset. A real possibility. So I'm going to see if I can get a reasonable price on two new heads instead and I' ll do both sides. Otherwise a new ( rebuilt) engine might be on my horizon. Have really taken care of the engine (Mobil 1), regular service. This head job really blows my mind..... Three weeks before Christmas.