I have to design a flyer for half of an 81/2 x 11 page. It mostly has images but some text. And I'm designing it in GIMP. Is there an industry standard dpi for simple prints? It's not magazine quality, but I'm looking for a decent dpi.
300ppi is industry standard for normal print items. Difference between PPI and DPI
How many actual pixels you have in your artwork is what is important, so you need (300 x width in inches) by (300 x height in inches)