Easy way to sell a group of domains as a bundle?

Hi, I am looking for an easy way to sell a group of 16 related domain names as a single bundle, it is these domains:

• letsbookrooms.com / .co.uk
• letsbookcars.com / .co.uk
• letsbookflights.com / .co.uk
• letsbookgolf.com / .co.uk
• letsbookholidays.com / .co.uk
• letsbookrestaurants.com / .co.uk
• letsbooktables.com / .co.uk
• letsbooktickets.com / .co.uk

It seems that a lot of domain marketplaces won't allow you to sell domains as a groups, Flippa in theory would be an options for this but it seems to be much more geared up for selling full website businesses rather than just domains. I do have a basic WordPress multi-site website configured which all of these domains are running in, but it's definitely not a fully functional website for each domain (I mainly set this up as an example of how these related domains could work together as family of domains / websites).

Thanks for any advice!