We've seen some other semi-popular Kamigawa cards like Oboro, Palace in the Clouds and Minamo, School at Water's Edge maintain huge prices despite fairly low play, which means if Shining Shoal does develop into an archetype staple in Modern, its price could climb even higher
Therefore, spend anything you can spare on chipping away at their life total
There is a PSA 10 listed on TCGplayer (for some reason) for $2,000, but that price means nothing until a sale is recorded
In a deck that only wants lands that make Green mana (Elves), the opportunity cost of including Turntimber, Serpentine Wood is extremely low
However, we do plan to clean up the storefront from time to time and remove products that have been around for some time