Future purchases?
Assuming past purchases converted to today's currency: D&D ~ 3.5(stopped buying WOTC stuff at 3.5), GURPS, Pathfinder 1, Fantasy Trip. Several others have yet to cross the $400 point.
In addition to games: Well over $400 on Reaper Mini KS and direct purchases. Probably close to 400 on Chessex battlemaps over the years, some for Star Fleet Battles, others for RPG. Same for Bookcases to hold it all. Loke Books of maps.
Likely have used around $300 in filament for my 3D printer on minis and terrain.
In light of above post, $400 probably not enough but PF1 Core, PF2 Core, GURPS 4e revised, Fantasy Trip. Don't forget, if assuming a total loss, you will need carry bag/pack/something, dice, dice bag, etc. More stuff if you are the GM.
<makes note to backup computer and store backup off site>
[ good time to take pictures of all your gaming stuff for insurance purposes. And store copy off site.]