The Game Steward
We have them for sale on our website.
Shipping is $15 from the US, but we'll have to set it up as a custom invoice.
I'm kicking myself that I didn't buy this KS add-on. I want to use them in Arcadia Quest and I need way more than the 5 that came with the KS.
If anyone is selling theirs please let me know. Willing to pay about $1 per chest.