It's only sort-of the Internet in my case. I might have browsed the odd #DIY store in my time. (-: You have to pull the rods out of a special storage rack with deep slots.
#Homebase had similar.
#Jewson's 2400mm rods are probably overkill, and my nearby Jewson is a lot less geared towards casual non-trade customers just going in and browsing so I've not really seen its rod collection in person.
https://jewson.co.uk/p/burbidge-fsc-hardwood-dowel-6mm-2400mm-BDOW2001