they are only 'official' in the sense that they aren't the 'prototype' (or copycat forgeries?). Greg's updated webpages on all the Lost Wacky stuff makes for some entertaining reading.
I just checked my "original" binders - they are not paper inserts in dime store binders, but are professionally produced binders, similar to the Non-Sport Update binders. The checklists on the back are much lower, and the spines incorporate the collage of Wackys, and have the name "Lost Wacky Stickers" over the sticker images.
One picture that is still on Greg's site resembles the front of my binders - the one with the starburst logo. The rest is indeed entertaining reading.
If anyone here buys one of these "nice find Official" binders, I'd like to know what it is like, i.e. D-ring, hard cover, or puffy like the Old School binders, or fabric like the recent Topps binders.