Fire alarms you do NOT want to collect

It’s been a long time for me, mainly due to money issues. The last time I bought anything was in July. In addition to the money issues, nothing is as cheap as it used to be. IDK if there’s a sudden demand or what, but the price of panels, even obsolete non-addressable ones has skyrocketed. I got my 4001 for $31, excluding shipping, and now they’re priced for hundreds of dollars.