Heh, amusingly avocados is one of the things they do better than the supermarkets around here. But I'm in California.
You're high. There are five ralph's around me and one TJ's. TJ's avocados are crap. They literally go from "unusably rock hard" to "beyond guac mush" in three days. The period during which they are actually acceptable to put on a sandwich lasts for about six hours.
By my experience, supermarkets in my suburbia prefer to get their produce once a week. On Mondays. From Wednesdays through Sunday the avocados left are ripe and have been pawed at for days already so even the good ones have bad spots. We don't have a TJ's in our town, so we go a few towns over on Saturdays usually. I can get bright green avocados from TJ's on a Saturday and have them ripe but a little starchy on Monday, ripe but firm on Tuesday and buttery Wednesday or even Thursday no problem and with few bad spots. Unless I store them next to bananas, then all bets are off.