A farm in Yamaguchi, Japan has been producing and selling heart-shaped strawberries named Ichigokoro since 2016. They can produce only up to 100 of these special berries per day from mid-December through mid-May. When I checked the website in the middle of January, all the fresh strawberries were already sold out. The price for one largest (3L) ichigokoro, six middle-sized (M), or nine small (S) ones was the same: 5000 yen (approx $45.70 USD). The farm sells regular-shaped strawberries too, but those are all sold out as well. Currently (as of 1/30/19) only available items are phone cases and message cards.