There are definitely architectural shingles that can cost $2000.00 more than a regular 3-tab for the specified roof size. The cost is affected by things like shingle weight, lamination, color variance, depth, and manufactured quality.s you will see below, the $77 / square up-charge was completely unjustified. The cost difference between 3-tab and architectural shingles is only $10 per square, while ALL other components of the system as well as the installation cost the same.