If the squel is only happening when you push the clutch in, the most likely a throwout bearing. How long has it been doing this and how bad is the squel? I drove about 4 months on a squelling throwout bearing, not that I should have though
As for cost, if you are pulling the tranny, you might as well replace the whole clutch assembly ie clutch disc, pressure plate, throwout bearing, and pilot bearing if needed
As for price is depends on whether you have a 2.5L or 4.0L and if it is an external or internal slave. Externals were on all 93 and newer Jeeps. My 2.5L external clutch was about $200 and the 4.0L was about $325