<script>
let lists = [
{min: 0, max: 50, price: 1000},
{min: 50, max: 100, price: 5000},
{min: 100, max: 500, price: 10000},
{min: 500, max: 1000, price: 50000},
{min: 1000, max: 5000, price: 100000},
{min: 5000, max: 10000, price: 500000},
{min: 10000, max: 50000, price: 1000000},
{min: 50000, max: 999999999, price: 5000000},
]
input = 200
let list = lists.find((v) => (input > v['min'] && input <= v['max']));
console.log(list);
// 結果
// {min: 100, max: 500, price: 10000}
</script>