The cheapest that I could find - that is available for delivery during the epidemic - was
an Epson Expression Home XP-2105 Wireless Inkjet Printer for £39.99, plus £3.95 delivery (same day).
I imagine that, as usual, it will come with half-cartridges. But, frankly, I am coming to see that buying a new printer is cheer than buying ink, so will probably continue to do so in future. If I buy a dedicated scanner, or just keep this printer to use its scanner features, then I can buy even cheaper printers in future, with no scanning capability.
Compatible with PC and Mac.
A4 print speed - black text: 8ppm (pages per minute).
A4 print speed - colour text: 4ppm (pages per minute).
Up to 5760 x 1440dpi print resolution.
Up to 5760 x 1440dpi colour print resolution.
Fits paper up to A4.
50 sheet paper capacity.
Uses 4 ink cartridges.
Recommended ink: Starfish 603.
Scanner and copier:
1200 x 2400dpi optical resolution.
Suitable for photo printing.
Mobile print enables printing direct from your smartphone or tablet through brand specific apps.
Photo editing software included.
Includes Full set of Ink, Power Cable & Instructions Manual.
Ink cartridge included.
Size H19.3, W37, D45.5cm.