Compare equal packages
A useful comparison starts with the same account limit, server type and billing period. Include any required add-ons. Comparing an introductory monthly charge with an annual renewal total can give a misleading result.
Look beyond the headline number
Check the payment currency, tax treatment and renewal terms. Currency conversion by your bank can differ from the displayed software price. Do not assume that support or every extension is included in a license package.
Keep the order snapshot
Record the price and conditions you accepted. Later catalog updates should not rewrite the amount of an existing order. Price history is helpful when reviewing renewals or explaining a package change.