Avocados do not last long, and you can freeze them to take advantage of sales.
Steps:
How do you freeze avocados?
Can you freeze avocados and if so how?
Using Avocados
Soil Advice for Avocado Plants
Storing Avocados
Storing Applesauce in Ziplock Freezer Bags?
Avocado Popsicles
Freezing Melons (Cantaloupe, Crenshaw,...