How to extract text from a span using xpath?

Question

XPath

hello, i have a string

span ng-if="!priceRanges.priceNotAvailable" ng-bind-html="formatPriceRange(priceRanges.current)" class="ng-binding ng-scope">$89.99

I'm trying to get text, but it returns empty

//span[@class='ng-binding ng-scope']

and the most interesting thing is that by inserting the code here, it really displays exactly the numbers