Prized

Start free with credit on the account and no card. Paid use is a monthly balance you choose, from $10 to $1,000 a month ($25 is shown by default), which boxes draw on by the hour and unused credit rolls over up to two months. Sandboxes bill per second at $0.04 per vCPU-hour, $0.0125 per GB-hour of memory and $0.0001 per GB-hour of disk.