We do a standard IFP for $25.00 Ea (price includes oil & labor, parts like seal kits, shafts and filler valves are extra if needed).
Flat fee;
Add $5.00 for remote reservoir.
Add $10.00 for revalving.
We offer free return shipping on a "four or more" deal.
You will need some special tools to "do it yourself". Tooling to hold the body and shaft, IFP depth tool and the specs on where it should be, Nitrogen and a high pressure regulator.
Mike