How would you market a: Web apps (PHP scripts) dev company?

Hi there folks, Arron here from idevSpot,
Fairly new here, I was hoping I might get some advice for marketing my website.

A little about us:
idevSpot is a web application development company (we sell PHP scripts) we have been in business for nearly 10 years and have a variety of types of script to sell (ecommerce, digital download, classified directories, affiliates, hosting, real estate, etc)

Most of our traffic comes from either Google search, or script listing directories, such as Hotscripts, and that has been great, but I really think there must be more that we can do to get the word out,

We get a good amount of traffic, but we are looking to take it to the next level.

We recently had some video presentations made up which I think are quite good, though they do not get a lot of views on Youtube,

Google Adwords used to be good, but not it is a lot more expensive and we can't really compete for the prime key phrases since our products are fairly low priced.

We do have an affiliate program, but have yet to really find any masterful affiliate marketers to sign on.

So...
I guess what I would like to hear, are any and all suggestions under the sun, that might really increase our traffic.

I don't think I can link here, but you can Google idevSpot (or check the link in my signature) to check us out.

Thanks!