Possible Trade-in ?

Hi there who ever may be reading this.

I have a small question regarding how the Apple Trade-in works.

A few months ago a few friends of mine bought together and purchased an Iphone 13 for me for my Birthday, it is an amazing phone without a doubt!

However, suppose I would like to trade it in for an Iphone 13 pro, would it be possible?

I couldn't really find the option of trading in a Iphone 13, as it only has options from the model Iphone 12 pro max and below.

I would just like to know if this is possible :)

Thank you in advance for your time!

Bianca . F