I would say if you had to buy any of the steel it would not be worth it. All the 3" channel for the running gear my brother got at work, the piece of pipe for the hyd tank I got from work ,all I had to do was put fittings and ends on it. Like I said the I beam and the wedge and pusher was from the older man who gave us a splitter years ago. The motor was off a old mower that was otherwise finished. So the main items I had to buy were the pump,hoses,fittings,axle,hyd fluid,paint,lovejoy,gauge,battery and some other items I most likely forgot. The steel for the motor mount and control tower ect I had and made in our shop. Just for an idea the motor mount I made I got priced out at a bunch of mech shops in my area; what I wanted was a 9x18x9 inch piece with two bends to make the u shaped piece I needed ,and the lowest price was $75 and That was not to put the gussets or pump mount or flanges on it to mount it. So I just made it out of three 1/4 steel plates I had at home. So all that to say this If you have alot of steel ,patience and time go for it,If you dont have some of the key items you may want to price everything out and add a couple hundred -Chub I fogot to answer your later part of the question, being that we had most everything we did it for about half or less.