Support!
In my personal opinion, the other moonstone sinks are perfectly acceptable. CATs and the merle and stripes genes are very desirable on their own and Lorwolf risks stunting it's growth in those areas by locking the professions behind paywalls. Players are likely to get frustrated and quit, especially with mining which requires 5 slots per ingot made. People with 15 slots will likely only get two ingots per 50 food and so it will take them way longer than their fellow players to level up, make money or craft items. Another result of having 15 slots is that you'll have a disadvantage in getting tickets for the mining shop. All the moonstone price is doing is punishing players who can't pay rather than rewarding players who can.