Create catalog images for software products

We sell extensions for a popular ecommerce platform and we need 10 images created that represent our products. The images are pretty simple. They should be 500x500 and they should still look good when scaled down to 150x150. Each image should be some text that describes the product (such as the title or partial title if it will fit and still look good at the dimensions) and it should include some unique graphic that somehow relates to the products. There should be some variety in colors used so that when viewed in a catalog there are color differences between the images. Each image can be completely unique or you can have some type of common design elements between them. I have attached an image that contains 9 example images that competing software providers have used. The images that we like the most are the first 3 and are looking for images of the quality of the first 4. You can see by viewing these images what type of software is used. The files should be delivered in adobe format (CS5 compatible) with all layers intact and with any fonts that were used in the creation of the images. The images should be completed within a reasonable time frame of being selected the winner. We will have more work in the future for the winning bidder (including 20 more images needed immediately after the 10 images test), so we want someone to bid who will have availability to complete more work in the future.