ArcadeMade.com maintains an arcade pcb price guide to help collectors gauge trends and popularity for specific games. Please check out the full list at: https://arcademade.com/pages/arcade-pcb-price-guide
During the COVID-19 pandemic, shipping restrictions and production schedules for arcade components/parts have been affected to some extent. Whether directly related or not, some FPGA arcade replacement boards have been selling for dramatically inflated prices, two or three times normal pricing, until new stock arrives.
The drive up in arcade prices may also be due to the fact that fewer people are able to get out to arcades/movies/restaurants/nightlife these days, if at all, and so they are looking for alternatives for an authentic gaming experience while playing at home.
Original arcade hardware prices are also up dramatically in the past years with many games doubling in value. Sometimes a new multi-kit will be released that will only work on a specific game version which drives up demand for a given arcade PCB.
Along with arcade and pinball prices rising, the home video game console market has been rising as well with many titles skyrocketing up in value. Many video game cartridges and discs for the Sega CD, Sega Saturn, NEO GEO and TurboGrafx-16 are nearly unobtainable for most gamers due to high cost. Highly common games like WiiSports have also reached prices exceeding $30.