I think Kickstarter is a good library for overpriced games just because they have a lot of miniatures
Otherwise probably some obscure, out of print, vintage game ? I've seen copies of Zargo's Lords (International Team) go up for 300€ on eBay, considering selling mine as well lol
No miniatures anywhere: the fourth edition of A World At War is $210 from GMT, plus another $67 if you want to replace the mapsheets with mounted map boards. (This is a monster game covering the entire Second World War at the strategic level. It cannot be played by humans in a reasonable period of time.)