how long does it take for a villager to put a furni in the flea market?

[Blackreach]

Like in my old town ive been time travelling days/weeks/months and all i see is ONE furni or two as max being placed in the flea market, is there something going on or?

 

[Poe]

I've had the same 3 items on display for months until I started sending letters with presents.

Try that.

 

[CR33P]

It's random. You have a better chance if you have lots of openings.