I have no experience with 6 ink photo printers. There is an Epson Artisan 1430 wide format printer with those six inks available from Amazon for $299.99.
https://www.amazon.com/dp/B006WAPTVM..._t2_B016F3Q4WS
Here is the Epson page:
https://epson.com/For-Home/Printers/...r/p/C11CB53201
Epson has a 6 ink printer with integrated ink tanks called the L800 but I can only find not available pages or pages from India or South Africa that mention it. The only price I could find was a conversion from 40,000 Indian Rupees to USD at around $619.11.
Here is the Epson.eu page:
https://www.epson.eu/products/printe...mer/epson-l800
A wide format 6 ink integrated tank printer or an all-in-one with automatic two sided printing would be nice.
I do sometimes print booklets so the automatic two sided printing is a looked for feature. You can print that manually but you have to keep the page orientation correct when switching sides or you have to read half of the booklet upside down.