 Would the narrator consider his trip worthwhile?
The aliens came in every shape and form, in all colors and textures—and all of them eager for a Corrigan contract. The Galaxy is full of bizarre beings, but there's barely a species anywhere that can resist the old exhibitionist urge. Stuff like this: Want to visit Earth—see the Galaxy's most glittering and exclusive world? If you are a non-terrestrial, there may be a place for you in the Corrigan Institute of Morphological Science. His last visit to the Caledonia Cluster until 2937, so don't miss your chance! A life of wonder and riches can be yours! It's the best of its kind, the only really decent place where Earthmen can get a gander at the other species of the universe. There was a lidless eye at the top of his head and five lidded ones, one above each arm. "Before we begin, I'll need certain information about—" "I am a being of Regulus II," came the grave, booming reply, even before I had picked up the blank. "I'll be placed on exhibition at your Institute on Earth. I'll be required to remain on exhibit no more than one-third of each Terran sidereal day." The spherical creature clapped his hands in joy, three hands clapping on one side, two on the other. But just because we needed him didn't mean we had to be extravagant in hiring him. He was followed by a roly-poly blue-skinned humanoid from Donovan's Planet, four feet high and five hundred pounds heavy. I passed him along to Auchinleck to sign at anything short of top rate. It was the isolationism of the late 29th century that turned me into the successful proprietor of Corrigan's Institute, after some years as an impoverished carnival man in the Betelgeuse system. Before then, anyone could visit Earth. After the gate clanged down, a non-terrestrial could only get onto Sol III as a specimen in a scientific collection—in short, as an exhibit in a zoo. Every alien wants to see Earth once in his lifetime, and there's only one way he can do it. At the same time, we had turned away a dozen ursinoids, fifty of the reptilian natives of Ghryne, seven Sirian spiders, and no less than nineteen chlorine-breathing Procyonites wearing gas masks. "I've never been within a dozen parsecs of Earth," he said smoothly. "I happen to be a representative of the only Earthlike race that exists anywhere in the Galaxy but on Earth itself.
 All of the above
 No - it was more trouble than it was worth  All of the above  No - it nearly cost him his life  Yes - he found many new non-terrestrials