Final answer:
The coordinating conjunction in the sentence is "but". It connects two independent clauses and shows contrast.
Step-by-step explanation:
The coordinating conjunction in the sentence is "but". A coordinating conjunction is used to connect two independent clauses or complete thoughts. In this case, "but" is connecting the two independent clauses "Avatar Aang needs a new laptop" and "he is waiting for the price to go down". It shows a contrast between the two ideas.
Learn more about Coordinating conjunctions