Have a look at these medium Sylvania 100 watters:
https://www.ebay.com/itm/185336524515. Ryan (HPSM250R2) is selling two cases and can't sell the lamps individually.
Now go here
https://www.lighting-gallery.net/index.php?topic=13090.0 add a reply that you want a few. Someone WILL buy a case. The problem is shipping to me is: $28.57 International Priority Shipping to Canada. What's it to you?