That's what I do too. In that case, for recent Topps Flagship sets I put Series I, Series II, and Update in separate 1.5in binders with Platinum pages. So that's 300-350 cards per 1.5in binder. I find it fits perfectly but some may find it a bit overfull depending on your opinion. I'm using O-rings but D-ring may be better, not sure if this effects the fit. I'm just trying to be careful closing the binder to make sure the last page doesn't get stuck under a ring.
MoTown Cards wrote:
I guess I was assuming 9-cards per page.