The Ranger Roller cams sell with rollers for about $100-$150 on Ebay. I sourced mine from Pick Your Part at a 50% off sale (now 40% off) and I think the cam and 8 rockers were $25 out the door. Their current (non-sale) price is $25.61 ($2 core charge) for the cam and $2.04 (no core charge) ea. for the rockers. They have environmental fees and state tax too. There is also $2 admission, the price of gas, actually finding the needed vehicle and the effort to get everything out.
One of the big surprises is that the cam won't come out until you remove two Philips screws and a plate at the hard to access back of the cam. A tip I used was a Phillips bit driver and a vise grip to get in the tight area and with a prayer get the screws out without stripping the screws. Another removal issue is getting the cam over the radiator cradle. Mine came out of a Mustang. Thankfully the radiator and accessories had already been removed. Regardless the cam hit the cradle. Some people jack up the engine, but being it was a self serve yard I just cut the cradle top on one end and bent it out of the way. While not super important I still prefer to run the rockers on the lobe they came from. So, eight numbered Baggies help.
Putting it all together on a non sale day it is probably about $50 out the door, $30 on a sale day. Removal time depends on the state of the engine as found (what has already been removed) and your skill level. I'd say 1-1/2 hours to 3 hours. As the saying goes, "Your money or your time."