I picked up a scintillator/PMT from this seller a few years ago: https://www.ebay.com/str/theradlab https://www.ebay.com/str/theradlab A few hundred for a comb

I picked up a scintillator/PMT from this seller a few years ago: https://www.ebay.com/str/theradlab https://www.ebay.com/str/theradlab A few hundred for a combo already assembled together.