When it comes to support pricing, yes! Complicated pricing antagonizes customers because they feel it must be hiding predatory practices; breeds confusion with sales reps that easily leads to “creative” pricing; and opens up avenues for customers to press for discounts.
Simple pricing with firm no-discount or pre-planned discounts policies removes confusion and is better accepted all-around. In the enterprise software world, a pricing based on percentage of net license with no discounts seems to be a very robust and successful strategy. You can offer several levels of support at various percentage levels and voila! A complete support portfolio everyone can feel good about.