Fist(noun) the hand with the fingers doubled into the palm; the closed hand, especially as clinched tightly for the purpose of striking a blow. Fist(noun) the talons of a bird of prey. Fist(noun) the index mark [/], used to direct special attention to the passage which follows. Fist(verb) to strike with the fist.
A good used workover rig (single) including rig tank, rig pump, doghouse, and rig tongs can be had for around $1 Million. A good new work over rig (single) including all the aforementioned stuff is ~$3 Million. I don't know how much more a double or triple would be, but I'm guessing in that same ballpark. A new drilling rig is in the $10 Million range, although you can get used ones for far cheaper.
After the collapse of the World Trade Center, the FDNY lost 91 pieces of apparatus and millions of dollars in equipment. The replacement cost was estimated to be $21 million. The rigs were damaged by structural steel and debris. Some rigs were turned onto their sides or flipped upside down.