To generalize, you get 2⅔ outfitted tracks per each rail, and/or 16 for each set of recipe-selector items.

Some points of interest:

• Routing: Other than the rails, basically free (1/16 redstone & an infinite-use golden ticket)
• Control: Gives 32 instead of the more usual 16

Railcraft 1.7.10 Outfitted Track Costs

Locomotive = 16 locomotive / (6 standard + 2 signal lamps + 1 railbed)
Whistle = 16 whistle / (6 standard + 1 black + 1 yellow + 1 railbed)
Limiter = 16 limiter / (6 standard + 2 repeaters + railbed)
Routing = 16 routing / (6 standard + 1 redstone + [0 golden ticket, or 1 paper ticket])
Coupler = 16 coupler / (6 advanced + 2 iron crowbar + 1 railbed)

Embarking = 16 embarking / (6 standard + 2 enderpearl + 1 railbed)
Disembarking = 16 disembarking / (6 advanced + 1 pressure plate + 1 redstone + 1 railbed)
Disposal = 16 disposal / (6 standard + 1 steel plate + 2 tie)

One-way = 16 One-way / (6 standard + 1 piston + 1 pressure plate + 1 railbed)
Directional-detector = 16 directional-detector / (6 standard + 1 redstone + 1 pressure plate + 1 railbed)
Detector = 16 detector / (6 standard + 1 redstone + 1 pressure plate + 1 railbed)

Buffer stop = 16 buffer stop / (standard + 1 iron block + 1 railbed)
Gated = 8 gated / (6 standard + 2 gates + 1 railbed)
Gated one-way = 8 gated / (4 standard + 2 advanced + 2 gates + 1 railbed)
Control = 32 control / (4 standard + 2 advanced + 2 redstone + 1 railbed)
Locking = 16 locking / (6 advanced + 1 redstone + 1 pressure plate + 1 railbed)
Booster = 16 booster / (6 advanced + 1 redstone + 1 railbed)

Launcher = 2 launcher / (4 reinforced + 2 steel blocks + 1 piston + 2 railbed)
Priming = 16 priming / (6 reinforced + 1 pressure plate + 1 flint and steel + 1 railbed)

The kit parts recipe seems OK-cost wise, and I am fond of the 3 bronze vs 2 iron vs 1 steel thing. It does trouble me tho.

All kit recipes use a wooden plank and a redstone (excepting the buffer stop); this might as well go in the rolling machine with the nuggets. (Rolliing wood? Well the wood could become something more rollable.)

Crafting things out of 3 nuggets (or worse, 1 nugget) feels super weird, like making a bulldozer out of a roll of tinfoil. The recipe could be bulked up to use ingots. And rather than giving 9x more parts, the track kit recipe output could be boosted up to make the ratios more like they used to be. Probably booster kits would need to take more rails.

Being a shapeless recipe that fits in the 2x2 crafting grid would be a nice property for the kit recipes to keep/have.

Could just make a shapeless recipe for the plank + redstone, rather than relying on the rolling machine.

I have a few other things in my to-do list, but I can handle this when I'm done.

This one is really hard. We need some gaming pros to discuss on this.

At some point the Parts got switched to Ingots, but the outputs were wrong (super expensive) and the recipes had a tendency to conflict with other things so were reverted.