Here are some examples:
* "I got a great bargain on that coat." (The word "bargain" refers to the good deal itself.)
* "The store is having a bargain sale." (Here, "bargain" refers to the sale where many items are discounted.)
However, "bargain" can also be a verb.
Here's an example:
* "We bargained with the vendor for a better price." (Here, "bargained" refers to the act of negotiating.)
So, it depends on the context!