ebay is always a good start, but I don't think I've ever seen CE plastic in the 150g range. Just Champ stuff. and a few Star discs. Seems like most of it is for or from the Japan Open. So you can also try Hero Discs or Discgolfvalues.com. The latter tends to sell on ebay, but he sure seems to get alot of Innova's CFR stuff.
I bought some double stamps for a good price and depending on the hot stamp. You can get them at a decent price.
Judging by your other post and pic. You're looking for 150 class Champ Rocs. You should have no problem with the sites I gave you. You are also talking $300 to $400 cheaper! True CE Rocs are bucks! I bought an "X-out" for $80, but it was woth it to me.
I have one or two japan open 2006 candy rocs that are 150 class, and stable. They were made from the orginal run from 2001. Back when Innova cut the flashing off by hand . There gummy. I would sell them shipped for 18 each or 2 for 35. Let me know. thanks Will have to look for them, but I did remember seeing an 2004 japan roc so I figured I probably have one or 2 new ones from 2006 around.