We nearly always had fresh raw goat milk available for purchase. The benefits of drinking goat milk can be found here. Generally, you can expect refrigerated raw goat milk to last 7 days. We always dated our bottles and only sold milk with at least 4 days of freshness left, though would work with your special needs.
There was a small bottle deposit on each jar of milk purchased. On subsequent purchases you could return the undamaged jars for full credit on each purchase. We always cleaned and sanitized both new and returned jars before use.