"Price may be lower" - quality of price (ability of being lower), or still possibility of being lower?

Please look at this imaginary dialogue:

- Hello, what is the price for 1 ton of salt?
- Good day, it is $50 per ton, however it is not final price and it may be lower after reviewing your purchase application.

Do you hear "may be lower" as a quality of price and therefore here may expresses ability rather than possibility, and as a consequence we can replace it with can and the sentence will have the same meaning as a result?

My idea that here may is used this way is based on the 6th clause of Collins dictionary's interpretations of "may":

https://www.collinsdictionary.com/dictionary/english/may

6. modal verbYou use may when you are https://www.collinsdictionary.com/dictionary/english/mention a quality or https://www.collinsdictionary.com/dictionary/english/fact about something that people can make use of if they https://www.collinsdictionary.com/dictionary/english/want to. The bag has narrow straps, so it may be worn over the shoulder or carried in the hand. Some of the diseases of middle age may be prevented by improving nutrition.And if it's not a secret, how do you define what meaning is suitable for my sentence? While in Collin's cases with bag and diseases it is evident by itself, in example with price as far as I'm concerned not. Although it's only opinion of non-native speaker. Thank you.