[Martin Elster]

Good one, Roger. Here's one I just came up with.

Earth For Sale

We’ve just received our largest shipment ever of blue skies.
***Come check them out before you leave the system!
But if, instead of atmosphere, you crave a nice sunrise,
***We’ve got so many styles. In fact, I'll list ’em:

The types from airborne particles or molecules of air,
***Volcanic ash trapped in the troposphere,
And cloud and Rayleigh scattering. We guarantee you’ll stare.
***That isn’t what you want? Then do not fear —

This planet sports so many things of interest and worth:
***Countless kinds of animals and plants,
And rocks containing jewels. You never know what you’ll unearth.
***You’ll long to live here after just one glance.

Too many folks, you say? You think this planet isn't well?
***Just look around. Behold the majesty.
From Everest to Death Valley, this world has no parallel.
***Oh, please don’t go! We’ll give it to you free!