Bid and buy wonderful prizes from around the world. Does this sentence need a comma?

No.

Yes, this sentence needs a comma. The correct sentence would be:

"Bid and buy wonderful prizes from around the world."

Yes, this sentence does need a comma. The comma should be placed after the word "Bid," and before the word "and." The correct sentence should be: "Bid, and buy wonderful prizes from around the world."

To determine whether a comma is necessary in a sentence like this, you can consider the presence of coordinating conjunctions like "and," "but," or "or" that join two or more independent clauses or phrases. In this case, "Bid" and "buy wonderful prizes from around the world" are two separate clauses joined by the coordinating conjunction "and," so a comma is needed to separate them.