The Sponge Illustrated Salesman (voiced by Greg Burson) is a persistant salesman for the Sponge Illustrated magazine. He gets Jon to get a subscription to the magazine for one dollar an issue (which he pronounces in the British English manner). Afterward, he often shows up to convince Jon to renew his subscription (even though it will not expire for a long time) at lower costs, even going so far as offering to pay him per renewal.
Talk about desparate...