I see media mail as the 4th option in the list for domestic shipping options.
It starts with:
- Select -
US Postal Service Priority Mail
US Postal Service Express Mail
US Postal Service Parcel Post
US Postal Service Media Mail
I don't have any suggestions about how to keep the font the same in the editor. Perhaps some users that have listed a lot more items than I have know of some tricks up in our Listing section of the community.