Please, please, please don't get a bowl if you choose to buy a goldfish! They CANNOT sustain the life of a goldfish for much more than a few months (rarely they live up to a year in a bowl). However, with 10 gallons per fish, good filtration, and an owner who loves them enough to care for their well being they can live 20-30+ years. They make great friends and can stay around for a long time
Glad to hear the fish where you are are healthy. Some chainstore workers can't barely tell a live fish from a dead one.
Keep in mind that goldies are a big investment, not just the fish but the equipment too. Hope this helps