I won't buy Sam's Club or Costco cados. No telling the length of time and conditions of storage they've been subjected to. Sometimes we get good Hass from Mexico at our local grocer. Those from Peru are usually the pits. My first choice for top quality Hass and low price is Morro Creek Avocado Ranch.
Am finishing up Reeds from Fallbrook. Got to say it's the best avocado I've ever eaten, and a note. Read where you can't make good guacamole' with Reeds, that they are more of a slicing variety. WRONG. They are so creamy, silky rich, nutty...they make great guac! Of course my fresh Mex limes kinda help.
When they are yellow and come off with a light tug, they are perfect. - light green flesh, juicy, rich, tart.
Mark