Harvesting watermelons

We initially had 10 watermelons but due to insects/pests, we were left with a total of 8 which we harvested yesterday. We gave away to our neighbors a few and kept the rest for ourselves. This season's watermelons are not as sweet as expected due to the weather. We will go for the second harvest soon and hope the weather is kinder.
Each watermelon is selling at S$13 (Yen 1,000) in the supermarket in Japan.