The easiest way to check information on purchases made on your account is with the help of email notifications. An email is sent for each purchase that shows the total cost and the amount of purchased gold or the name of the bundle. We recommend searching for "no-reply@wargaming.net" in the email search bar to find what you're looking for.
More details about your purchases and account data can be found on the Account Management page. Go to the Data Protection section and click on the Export Data button. Please note that this is a lengthy process, and it may take up to 30 days to generate this data.