gnot that's an easy one! Bidders love nice full pages, I call it "density" and I always want that in a collection I sell. I am convinced that if you had 20,000 1840-1940 stamps in a Scott International Album which is abridged you would get a lot more $ than if the same exact stamps were in a Schaubek or Scott Vintage Album which aren't abridged. I'm talking 2 or 3 times as much $.
I agree with codehappy I sell everything using the auction format because I don't want to carry or invest in inventory and I like the action. I turn my inventory over 7 times/year and I couldn't come close to that selling fixed price.
I sell in the WW Collections category and I don't consider NYstamps, Noblespirit and CKsstamps to be competitors I view them as my "anchor" stores. They bring viewers to
ebay and then they stumble across my modest little "boutique" listing.
I think there are a lot of
ebay sellers with 10,000 and 30,000 feedbacks that are profitably selling stamps on
ebay but staying under the radar. Check out pavstamps, he sells a huge amount of stamps and if you're not his customer you don't know him.
ebay doesn't give you any ability to list out sellers and you can only find them by searching the listings.