25 Unique articles about locksmiths related industry

I need about 25 web pages written. I will provide the subject (Locksmith & Transponder Keys Industry) of each article and a brief description, but you will be required to research a small amount on each subject and write a completely unique 400-to-500 word article about each subject. I ultimately need about 2000-3000 total articles but am only comfortable assigning 25 at a time, to start with. Once I get a good grasp of the quality of your writings I will definitely be open to offering more articles in each batch. I am looking for a couple of good writers who can pump out interesting content. I would like to test your writing skills, with you giving me one sample article before I award you several hundred articles. The better you are, the more articles I will give you. Here is a sample of the work I will give you; Mul-T-Lock and/or High Security Locks: The focus of the article is to be on why we sell these locks (what makes them different from your average lock), and why a customer should use them on their home or business. (These articles are intended for our website so use the term WE instead of a name. EXAMPLE: We sell Mul-T-Lock in part because it is impossible to hand pick.) RULES: 1.) Please write to a 7th or 9th grade level, as most web readers read on this scale. 2.) 5% of the words in each article should be the keyword that I give you to use in that article. Example: Dallas Locksmith I want someone VERY AFFORDABLE. I have A LOT of work that needs to be done. THESE MUST MUST MUST BE UNIQUE ARTICLES, I WILL NEED TO RUN THEM THROUGH COPYSCAPE BEFORE YOU ARE PAID. Thanks for the interest, and good luck.