In general, material costs have more than doubled in the last 5-10 years. We've seen decking go from $3.14 a linear foot to $7.12 per linear foot for the exact same deck boards, in the exact same colors.
We try and keep costs as reasonable as possible, but like everyone we have to think of our staff, our our showroom, our subcontractors, and our bottom line. With the increases in costs on everything, it's not hard for a deck or pergola to be $15,000-$25,000.
What we want our clients to understand is that they're investing not just in quality products, but also quality service. Neither of these two come cheap, and what we've found is that when they do come cheap, it's you, the homeowner that suffers. Our goal is to educate you on why things cost what they do, so you don't get left paying for things twice because of inferior product or service.