I recently started scanning these items and will upload them eventually (that's a whole other beast...

I don't think I buy too much or too quickly. It's just too easy to avoid the responsibility of "gallery maintenance." There's always some other important business that needs tending to and cels tend to get the back burner.
Having the cel is the most important thing, displaying it online is a bonus. I love sharing my collection but I definitely neglect the proper up-keep. I admire the gallery owners who update frequently and in a timely fashion. Kudos! Wish I had that kind of gumption.