Contact your local musicians union. Ask them to recommend company's that specialize in graphics and photo reproductions. Also, Check the yellow pages. Contact other musicians you know with professional 8 X 10s or photographers that specialize in band promo shots and ask them to recommend a couple of places that specialize in photo reproductions in quantity. Should most definitely cost you less that what you'd pay at a photo lab. The word "reproductions" should be one of your main keyword searches in the yellow pages. Best of luck.