Shell Spiffy is a magazine that only appears in the episode "Shell Shocked."
On the cover, there is a dark purple and light green sea snail with a light magenta cone-shaped shell that has a shiny gem on it and also shows the name of the magazine in red text. SpongeBob thought their prices were outrageous. In the magazine, there is a shell that looks exactly like Gary's shell that cost $9,595.95 or more plus tax.
Role in episode
Gary shows SpongeBob this magazine with the intent that the latter will order a new shell after he accidentally breaked the former's shell.
The German title for this magazine is "Das Schicke Schneckenhaus," which translates in English to "The Fancy Snailhouse."