How much time do you have to sell all of this stuff? Is the balance point more towards clear it all out, or towards maximizing the dollars?
If you can work out storage for the long haul, you do have a treasure trove. I've never cleaned out a massive bike collection, but 16 years ago I DID manage the eBay portion of selling off my wife's grandmother's estate. We wound up with a double car garage packed full of stuff, and I would typically select 20 or 30 items per week, wipe them down and photograph them and take notes, do a little research in the sold or completed auctions and sometimes just prowl the internet for some information, then list it. All the eBay rules applied, lots of good clean pix, etc. It was a LONG HAUL done on the side of work, recuperating from surgery, etc., but I wound up raising a considerable amount for the estate that way. I was shocked at some of the things that brought money. The metal toy soldiers in a French Foreign Legion set, complete with camels and Tauregs by either Cherilea or Britain's Ltd. brought $750, which was kinda nice. The two coasters from a long-gone bar in French Indochina wound up going to a gentleman in England for $250, which frankly astounded me.
With quantities of new items like the Kashimax saddles, I would suggest inventorying them, getting a good clean photo of one in each color, looking to see how much they've actually been selling for, and set a buy-it-now price accordingly. If you wanna move them quickly, maybe buy-it-now for 75% of what they consistently sell for.