I deal with a local heating and air conditioning supplier for all of my HVAC needs when it comes to buying things for my central HVAC system unit.
This heating and cooling supplier usually just cators to legit heating and air conditioning businesses for wholesale deals for them to get their heat and a/c products.
However recently, the heating and air conditioning supplier was allowing everyday people the option of signing up for a monthly membership to be able to get the same deals that the HVAC companies do wholesale on heat and a/c products. I have one of these memberships which is only 20 dollars a month. And this month I was happy to see that they had HEPA air filters in wholesale on sale for half off the regular price! I could not believe my eyes! The HEPA air filters already were a deal from this heating and air conditioning supplier buying in wholesale. But to get a wholesale of HEPA air filters on sale from that price is beyond amazing. You can bet that I rushed right down to the heat and a/c supplier when I read this in their monthly newsletter that they send members. I did not want to miss out and get there too late after the HEPA air filters were sold out. I know everyone, including the heating and air conditioning companies were going to be rushing down there as soon as humanly possible to clean them out of HEPA air filter! I wanted to get there and get mine before anything like this would actually happen.