Do something to capture and qualify these leads further. Right now you know nothing about them.

Maybe they are people merely searching for the price just for the fun of finding out what it is.

Put a button or form or popup ("Are you looking for more information about buying Learjets?") up. Get their email and ask them a couple questions, like their budget, their background and how much research they've done on buying a Learjet before arriving on your site. What they've found most frustrating so far. How they found your site and how they think you can help.

Find out if they are serious. THEN you're in a postion to make a page with appropriate content for each search term, and downloadable buyers guide report in return for their email. At that point you could approach a dealer to partner with or approach the manufacturer. You have a lot to find out before you do that.

Most manufacturers I've worked with either won't sell to a onesies and twosies seller, or they will start you off at a poor discount from MSRP compared to established dealers. It may be best to go through a proven dealer who has an awesome discount initially. Adding half a point to their price will probably still be lower than the price you get direct from the dealer. But as I said, you're a long way off from being able to credibly do this.