Thanks for joining this thread, @Maryj4 .
It’ll typically be apps that have control over your store’s products — a lot of dropshipping apps in particular seem to have a feature that’ll not only sync inventory, but also automatically update product pricing.
If you’re having trouble with narrowing down which app could be responsible for the price changes on your store, you can get in touch with our live support team so that we can help investigate this in more detail from our end.
You can contact our team via the Help Center here, by typing contact support in the chat box, and following the prompts given by the chat assistant.