Just sharing information and experiences:
Many shingle manufacturers are making UL 2218 Class 4 impact resistant shingles. These shingles are made with some sort of polymer making them less brittle and more rubbery. The idea being that when high speed impacts from hail occur the shingles aren't cracked or broken. The Class 4 shingles all cost about the same price ($106 per square). However they are heavier and usually it takes 4 bundles instead of 3 to cover a "square" (100 square feet) of area. So, at $106 per square that is nearly 3X the price of a 25Y architectural shingle and 6X the price of cheap 15Y 3 tab shingles.
Anyway, I have roofed 4 properties this year with Malarkey Legacy Series. My conclusion on the roofing scene is that if you know the material costs and ask make the contractor separate the material and labor costs in his quote you will nearly always be able to identify his profit margin on the deal. The end result is he will walk away or reduce his labor to a reasonable amount allowing you to reallocate the roofing funds in such a way as to get the Class 4 shingles installed for the same price you would have gotten 15Y 3 Tabs.
I paid no more than ~$75 per square for roofing labor including haul off and disposal on all 4 houses I had roofed this year.
Class 4 shingles:
Malarkey Legacy series
Certainteed Landmark IR series
GAF Timberline Armorshield series
