Prior to my career change some years ago I used to be a retail manager. I've sold hundreds of guns over two decades in Florida. When President Obama was elected and when there was any hint of serious gun laws being introduced there was a surge on buying both guns and ammo. I would have people line up at 4am at the sporting goods department just for a chance to buy a gun. We never knew what was coming in and when. Yet people would line up. Rifles that would sell for $700 would be purchased and resold for $2100. We ran out of ammo within minutes. I predict all this will happen again if it hasn't already. I've been out of the retail business for 5 years so haven't paid much attention. But I can tell you that what the Democrats propose to do will only increase the demand for guns and ammo.
I read through President Elect Biden's proposal and even if these laws get past they will be very difficult to enforce. There currently is no national database on who owns the nearly 400 million guns in circulation. I own 7 guns and only one I bought from a store and filled out an ATF 4473. That form is stored in a box at the store. The other guns I bought private party and there is no link to my name.