Print ready would be you have the file sized and formatted how you want it to be printed... ie you want a yard sign, you have a file ready to print the sign whatever size you choose. 24"x18"x4mm printed full color, double sided would be around $13 each, for example. 10mm are $25/each.
24"x18" rectangular magnets with rounded corners would be around $84/pair. The same size, contour cut (whatever shape) would be ~$133/pair.
Paper business cards, double sided gloss finish on both sides, full collar are ~$.055/each. Aluminum cards double sided are ~$2.18/each unless you go thinner then they're $1.64.
Single sided vinyl banners are ~$2.50-$4.50/sq ft.
Ballpark pricing, minimums are a thing. I have access to print things online from my photography days, but I don't have any desire to do other's graphics work.