Ok ok I'm back. Had to leave this party for a while and get some real work done.
I didn't want to go there because I felt that this is "advertising" my tool, however I will say that I truly have better found a way to promote sales for our $250 dynamic PPC tool than here at the forums! So with that being said I'll share what I've learned on this.
The tool, which we call 'dynamic PPC' (we are pretty Spartan with names around here) is simple on what it does:
We get a feed from your inventory provider and based on that;
It looks at the inventory and creates 10 ads per car based on the content in the feed. So for example it will create an add that focuses on 'model + color' matching and another one that focuses on 'model + unique' options matching and so forth. We thought that this will give us a better matching percentage with longer tail searches.
All the ads are linked straight to the VDP unless we have more than--I think it is 3--matches and in that case we link to an SRP with those 3 matches. For example this is useful for Toyota dealers with lots of '14 used Corollas in inventory.
In my experience, new car campaigns have been kind of disappointing. This could also be that we have never ran campaigns on successful new cars; let me explain. Dealers selling a lot of new cars--called high volume low profit--are never interested on spending money, they already sell cars what they need is to figure out how to contain expenses. Then we have dealers with low volume like... Infiniti for example. Willing to spend some money on those 2 individuals in their market looking for a brand new Infiniti.
We were a little bit more successful when we combined new car dynamic campaigns with lease payments, however we only do this for dealers that are fairly involved on PPC in general (meaning they have lots of other campaigns so they have specials, good pricing, etc).
Used cars work just fine, pricing is close to that regular PPC is in most markets. The attached screenshot is a luxury brand in the Seattle metro market. You judge the cost in comparison with your own market.
As a warning; you should do dynamic PPC if:
1) You have a small budget and just need to get some VDP views in your very aggressively priced used cars.
2) You have a good idea about PPC and already do a lot of other things, this is just extending your reach into searches.
You shouldn't do this if:
1) Your used car sales are slow and you are looking for the one solution to change the month.
2) You want to fire a 3rd party provider and replace it with this newfound magic tool.