what are you needing? i traded out most of mine for henkei ones so i have quite a few i could let go you can also look at bbts.com and even though they are out of stock they still have all of the availible figures from the line
There's this awesome site called TFW2005. They have a whole database of information. Here's the link: Transformers Classics Toys - Transformers - TFW2005
The challenge you'll have is exactly what you class as "Classics" as it actually consists of three lines (at least): The original (unnamed) Classics line of 06-07, Universe 2.0 of 08-09 and the latest "Generations" line (2010). But within that, there are other figures some people wouldn't class as part of the Classics line, repaints and the like (e.g. Universe Blaster)... What am I saying? Don't expect somebody else's list to answer the question easily for you. If you're just getting into collecting this line (and you might not be, that's an assumption), you'll have to decide for yourself "what counts" and "what doesn't".
Here's what you're looking for: Classics/Henkei - The Definitive List (of NEW molds with 'Classics' styling)
While a lot of work was put into that list, it's a list of new molds only... not all of the toys things that are officially considered CUG or whatever... As much as people want to deny it, the repaints DO count. But yeah... as someone else said, all of the figures from the 2006/7 "Classics" line count (including Devastator and reissue Soundwave). Then we have the 2008 Universe line. Now we have Generations. Also there's many club figures from the Timelines series that count as "Classics", not to mention ones that were intended to be CUG, but packaging was changed to suit the store (Wal-Mart Fracture, Getaway, Crankcase, and likely Big Daddy and co.).