I'm looking into getting an edible printer but I don't have a lot of money to spend at the moment (there is a specific cake I'd like to make but I need to print the image next week). My local walmart has a canon pixma mg2522 on sale for $19. Is this a decent printer for edible images? 

Sorry I don't know anything about them BUT....rather than spend $$$ on what might not be a great investment why don't you just get someone to print out the pic for you?  I have heard some WalMarts do and there are other places.....do you have a cake shop in your area that imight do i......usually for less than $10 

check out icing images dot com in their q&a section — it ‘s not called that exactly but that site is most reliable for edible ink printers 

https://www.cakecentral.com/forum/t/851177/which-edible-printer-in-2019