Teri, are you asking where we print completed digitally-created layouts? Or are you looking to print the individual components of a kit instead?
Personally, I use a wide-format inkjet printer and a variety of papers to print papers and what-not for hybrid craft projects. Mine is an Epson that I don't think you can buy anymore, but PC Magazine posted this article on wide-format printers for 2024. If you find one that's set up for 12-13" wide media, you'll be in great shape:
https://www.pcmag.com/picks/the-best...ormat-printers
Their prices range from $150-1,500, depending on features.
I know you can also use a local copy shop to print "oversized" files on regular paper, though you'd have to contact them directly to determine if it's acid & lignin free. Staples and Office Depot, for example, can do colored prints that are larger than 11" wide.