I just got my volume 1 a few weeks ago too and I love it. I got mine on eBay
as well for just over $100, no stamps never used from a collector who never got around to using it. I too thought, "what about volume 2" and found volume 2 for $50 on IHobb, also previously used with a couple hundred stamps. Now I'm looking around for volumes 3-6 and thinking about buying more binders . . . (addiction)
I'm using the checklist and I took the advice given various places to spend $20 and have it professionally printed and bound into a nice booklet. Cost about $20 shipped and worth every penny.
I personally don't hide anything from my spouse, but he's a collector too . . .