Does anyone have buy and sell stats for the Mini Thermal Detonators from Under a Black Sun? It gives a profile for using them since the Nemesis in the Adventure uses them but it doesn't give a price or rarity if the PCs want to buy them. If there are none I would assume they'd be about half as much as a normal Thermal Detonators but maybe a bit rarer. Obviously Restricted. Maybe 1/3 Encumbrance like Bolas since the normal Thermal Dets are already 1.

Probably a simple way would be to check how much less powerful they are then full detonators, and see how many you need to make roughly the explosive force of a single TD. Then just sell them in packs of that many, for the same cost, rarity and encumbrance.