Mid to high $$$ for this name. I can think of some commercial usage where underwater finds are auctioned.
rarefinds sold for $1000+ and that's my point of reference here.
This is a small niche, I wonder if this will indeed sell.
Please disregard above appraisal. What kind of comparison is that? You can't match "underwater" with "rare", it's like comparing oranges with airplanes.