<?php
$json = <<< JSON
{
"730": {
"success": true,
"data": {
"price_overview": {
"currency": "USD",
"initial": 1499,
"final": 1499,
"discount_percent": 0
}
}
}
}
JSON;
$json_a = json_decode($json, true);
echo $json_a['730']['data']['price_overview']['initial'];