Hi - Please be aware that Freelancer's minimum commission is $5.00, therefore my $10.00 bid means that $5.00 will go to me. I will do the first article for the stated amount, however, please be aware that your desire for "native English writers only," and "Intensive research" will make this price an issue going forward. I have read copy for adult sex toys (Yes, I am comfortable.) and the text is typically close to illiterate. If this is what you are seeking, illiterate sounding text, then I am not the person for you. Someone from Pakistan or Kenya would claim to be a "native English" writer and would be delighted to accept your money. The results may not be what you are seeking.