User blog comment:Teams820/Tiny Village game ideas/@comment-4763021-20120502031635/@comment-4988993-20120502041106

Nice idea but too cheap and easy to get. It would be better if it was:

Crystal Mine: Level 30; cost 1,000,000; limit 1; up to 2 workers, up to 2 haulers; collects shards and can trade these shards for a certain amount of crystals.