It could be a small surge but something where you noticed a sudden influx of people. Maybe a game you were playing that got quite popular after it was streamed or there was free weekend on Steam.
For example during the quarantine and around the time when the used console market got prohibitively expensive handheld emulators like the RG350 and much later the Miyoo Mini got quite popular. This was partially due to more people at home wanting to play their favorite classics but also them being promoted as “fake” GameBoys and PSPs on TikTok.
Beats made the headphone market absolutely explode. I think the fact that the early ones really kinda sucked brought a priceless amount of free exposure to AKG, Grado, Sennheiser, etc.
Even the low-tier headphones got significantly better