Just looking at bits n pieces for my Skyline this morning and I don't know if this point is in the front of the minds of others when buying parts for your Skyline.
Looking at JJR + Kudos pricing, then RHD and Nengun.
Firstly JJR / Kudos - The prices are pretty static for the first two shops. Meaning their generally premium prices. This may be because they bought up big way back when. Both shops have great service and delivery is generally within a week. So if you want it now and are prepared to pay premium - best way to go.
RHD / Nengun - Seem better BUT when you add freight, 2-3 week wait time and potential warranty issues, there is very little difference.
These 4 shops only have what is on their catalogue.
However dealing with Marcus (Elrodeo666) and/or Jesse Streeter - the prices are ALOT less. This is because they get current prices from the manufacturers direct, they have personal relationships with the distributors (they know guys) and they apply the latest Aud to Yen prices, but the wait time is around 2-3 weeks. Also and it hasn't happened yet but may also have warranty issues.
So if you can wait 2-3 weeks I'd recommend one these guys. Plus they hunt parts down for you.
If you want it in a week then JJR or Kudos.
Eg: the NISMO twin plate clutch I was after. In Aus $2420 + Delivery. From one of the guys above $1700 delivered.
And lastly if your prepared to wait longer - then ship from Japan by SAL or SEA for an even bigger saving !!