Replying to Subaru Impreza WRX Head Gasket

Im looking at an Impreza Wrx Turbo. I have heard that the head gaskets can shit out on them, like quicker than a non turbo.

So does anybody have, or have had this head gasket problem? And if so, how much does the repair part cost and get it installed?

any info will be helpful.

Yes i have searchbarred on google

The car