One thing that is often over looked (not calling anyone out) is how much costs have risen for builders. During the price run on oil material prices jumped nearly weekly from 5-20% in some extreme cases even more, distributors that offered free freight added a fuel surcharge. Resins are a petroleum based product so when oil tripled, well resin was right with it. I know what some of you are thinking... Oil is not as high as it was. True, but prices in the composite industry seem to never go back after an increase. Even with the stat of the economy there is enough business in the various sectors of composite business that the material companies can hold their prices.
As for engine prices it is brand to brand and even hp to hp with in that. Some held 2009 pricing, the rest there was a 1-2% increase.
As for this it is really up to the buyer. I will say this... With boats there is no limit to how much you can spend. It is really easy to over look how much time can go into various aspects of a project. A 30' boat with twins 200's you are looking at what, 30k worth of motors in the box. That is not factoring components, labor, or the hull.