[drc]

My opinion is to start small and see how it goes. If it builds into a full time business that's great, it it builds into a supplemental income that's good too.

From a practical point, starting off small and slowly is to see how things work-- what does, what doesn't--, getting think kinks out of the system, discovering your errors and misconceptions on the small scale. And, as I said, if that eventually leads to something bigger, great.

One thing is if you star with the pre-conception that you will only sell, say, baseball memorabilia, that might be an off busines choice from the start. There may be other areas (to sell instead of or in addition to sports) than sports memorabilia. Be wary of sentimental blinders. Duly note, I'm not saying sports memorabilia is a bad place to sell, or that it can be good to sell items in an area you are familiar with.