How much to ask for 511 spares?

[F1END]

I just managed to secure myself a TRF511 on ebay!!
Can't believe I got it so cheap, as no-one else bid on it.

Problem is, I'm gonna have to sell most of the NIP spares that are coming with it so I can afford a saddle-pack or 2 for it.

How much, as a general rule, are people prepared to pay for NIP spares as a percentage of RRP? I know people don't like for-sale posts with 'make me an offer'.

Just wanna work out how much to ask for things like:

54140 drive belt
51290 king pins
51271 B Parts
51275 Front arms
54027 slipper pads
53988 Ball Diff Pulley (37t)
51287 Diff plates
51314 91t spur
53989 centre pulley
49300 thust bearings
53969 hard hex ball studs
54133 new clear body and undertray
51286 Diff Joint
53974 Front spring set
53975 Rear spring set
3 racing front tower
Lazy ceramic diff ball replacements

Also, if anyone wants to make an offer on any of the above, let me know. (might not sell it all, just wanna work out prices for now)

thanks.