creating a page display tag categories

Im getting there i promise!! close now :)

when adding products i am going to tag products with the type of delivery we do on that product.

eg 24 hours

48 hours etc..

i would like to create a page that displays these options as categories.

i understand that you cant use parents with tags ( :( )

and i know that i could create a wp page, then add the categories like ive got on the homepage, but this requires alot of maintenance as tags, urls can change etc

would this be possible?