I just sent the striped frame, conversion cylinder and breachplate, and barrel. It is a good idea to check headspace also, with the conversion cylinder in I had way too much head space and since I was getting the barrel linned I had them set the linner back a little to tighten it up. You can see it if your realy looking for it, but the linner set-back isn't that noticable.
I do need to grind a good bit off the front sight, I like the 165 grain round and it prints a foot low with the curent front sight, both black powder and smokless. If I had it to do over again I'd probably leave the front site alone till I tried some test loads.
The minimum cost would be for the cylinder and breach plate, and you could use hollow base bullets till you can afford the barrel mods. I oppted for the roll engraving on the cylinder so it was a little higher than a non roll engraved cylinder. The roll engraving is fainter than on the percussion cylinders, but is legible and the cylinder is 4150 steel, so it doesn't stamp as easily as the softer percussion cylinder does.
When you add everything up it would be probably cheaper to buy conversion from the factory, but I wanted as close to "authentic" as I could get and this used to be a cap and ball. The factory "conversions" I've seen are not quite "rite" to me if I'm making myself clear?