I usually have Staples print out my covers on Elite Gloss paper. Cost per print is like 50¢.
I don’t remember the last time I went to staples, but will I need to bring a USB that contains the covers I want to use, and print it out there, right?
Probably so mate - though always worth an ask - I find most Staples employees are willing to help and even offer advice, especially for interesting projects like these.
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If you wanted to do some covers yourself I’d opt for semi-glossy photo paper, or just glossy photo paper for your covers - just remember to adjust the printer settings so it knows it’s printing on glossy paper as opposed to standard quality ‘everyday’ paper.
I find it hand to do a test print in draft settings (or whatever the lowest quality settings of print is on your printer) before trying to print in the high quality ink settings - just to make sure sizes and alignments are all ok.
Good luck with it 😃