[RussianCow]

That's completely different. You're talking about a single piece of art gaining value over time as it's bought and sold. What's happening here is the price of all remaining logos increases as sales on any other logo happen.

[nxzero]

No, artist will commonly price a collection this way to show there's a market and get buyers to act sooner that later. It's assumed that not all of the logos will sell, and some if not all may have been versions of another logo.

[VikingCoder]

I am NOT talking about a single piece of art gaining value over time.

I'm talking that I sell one painting for $10k, and the next for $15k, and eventually I'm selling a painting for $1m.