For indoor rock climbing (probably outdoor as well): you need, at least, two pairs of climbing shoes. One pair will be out for a re-sole and you can use the other. Though, don’t buy your own shoes until you are sure you’re going to stick with it for a while. No point ending up with used shoes you’ll never use again, because you finally decided the sport isn’t for you.
For indoor rock climbing (probably outdoor as well): you need, at least, two pairs of climbing shoes. One pair will be out for a re-sole and you can use the other. Though, don’t buy your own shoes until you are sure you’re going to stick with it for a while. No point ending up with used shoes you’ll never use again, because you finally decided the sport isn’t for you.