Hi,
You can find my academic and professional background in my profile.
I've placed the lowest possible bid on your project, because I would need a bit more information in order to give you an exact quote in terms of price and time.
My rate usually lies between €0.02 and €0.025 per word for normal articles, although it depends on factors like topic, volume, etc... In the case of 500-word articles, I should be able to deliver all 10 to you within 3 days.
The articles will be written in native-level English, and they will be 100% original, without the use of automated software or copy-pasting. It's absolutely no problem for me to take a small test, as you mentioned.
I hope to hear back from you,
Regards,
Max