If any American members want variable ballasts here's a couple
https://www.ebay.com/itm/256434332451? https://www.ebay.com/itm/387484802366 Heres the sort of lamps the last one is meant for
https://www.ebay.com/itm/354869576884? https://www.ebay.com/itm/225011148266? https://www.ebay.com/itm/144221903968?I think there's a few members here that have 700 or 2000w lamps that would probably want ballasts and the 35w(230v?) and (50hz?) cwa ballasts are probably worth saving.
Are there any industrial surplus places around there?
I'm assuming the ballasts are mostly 230v 50hz and you probably too busy with the move to deal with shipping tons of stuff internationally?
Won't you need the vacuum stuff for led filament lamps?
Don't forget to check the attic/basement/closets on the way out.
edit; Any of those 3 pin bayonet sockets?