That there is some sort of financial compensation there, to me, means it isn't pro bono.
It is not pro bono because there is financial compensation.
Highlights include an Indian-style Shaka triad; the Yumechigae ( Dream Changing ) Kannon, said to transform its worshippers' pleasant dreams into nightmares; and the Kudara Kannon, a dim, ugly statue named after a region in Korea, whose designer and creator was almost certainly Korean.