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