Posting to US PO Box

Hi forum


Just received a large (for me) purchase (AUD $270) from a Florida based business (ebay states they live in Russia)??


The posting address is a PO Box in Florida


They have 117 (100%) pos feedback (all purchases) with many repeated consecutive comments for those items purchased.


Should I be suspicious?


My gut feeling is they are legit


I am working out a combined postage for the items so payment has not concluded


Any advice before I contact buyer would be greatfully accepted


Many thanks


Neil