About $5,000,000.
When you buy the maker shed Saibara the blacksmith will sell makers for Adamantite 20000G
Assuming all have equal velocity the greater mass (20000g) will have the greater kinetic energy.
It takes one calorie of heat to raise one gram of pure water one degree Celsius, and it takes 80 calories of heat to convert one gram of ice at 0° C to one gram of water at 0° C. 0.1 kilograms equals 100 grams, so... 100 * (80 + 20) calories = 10,000 calories
When you first start out on Harvestmoon: Island of Happiness, the way you get money by planting and harvesting crops. It takes a while when you start the game to get money, but when Gannon ( the carpenter )comes, build a Chicken Coop(20000G). But if you have enough money, build a Barn too. I would suggest that you build a Coop first because it only takes 10 days for the chick that Taro gives you to grow up and start making eggs that you can sell. I just martured my cow in my new barn and it took 19 days. So the chicken grow up fast, but cows produce more costly products. While your crops and animals are growing, I personaly like to gather grasses( colored hearts ), flowers, and the seaweed that grows on the rock on the beach only in the spring( when you enter the beach go left and then down ). Hope that helps!