The expression is not a sentence, obviously. It is a slogan. There are no rules for slogans, partly because (perhaps fortunately) they have not been studied by grammarians (or logicians). They could be so studied, but I hope will not be.
It is fairly obvious that the slogan in question could be classified as a kind of promise or, perhaps, offer.
Two of the most important requirements of a slogan are brevity and clarity, and the O.P. slogan fully meets both. The full sentence mightbe something like
If you are desperately looking for an (exceptional?/ fashionable?) article of fashion, design or furniture ... come in here and we can find it for you."
In fact, the slogan is vaguer than than and that has teh merit of 'inclusiveness'. It suggests that the people inside are brilliant at finding desirable or desired 'stuff'. The slogan casts the net as widely as possible.
But what about the comma? It serves no purpose. The normal purpose of a comma is to mark a small pause between conjoined clauses or phrases, as much to guide the rhythm of reading as the meaning.
The comma between obsessions and found has no such function. Well, perhaps the writer wants to make the reader pause and make of the "found" a climax (or more of a climax). But the advantage of slogans is that the standard norms applied to sentencesdo not apply. If it is a climax you want you could, for example use three dots:
Your next obsession ... found