What size product photo do I need to put in a full page copy intensive advertorial? or how big should the photo be?

I am offering a free bottle of a supplement.

In otherwords what the standard recommended size for direct response so that its not to small or too big?

Mr Subtle, I was hoping you would answer.

Ok, what would you suggest?

I want something that looks editorial to run as a full page editorial (advertorial) in a magazine that would work as a quarter page in a newspaper.

The bottle looks like a pharmaceutical type drug with a professional looking label.

I want to fit from 800 to 1000 words of copy into this format, however the product photo would be competing with space.

I want the product photo to capture the attn. of my target audience (reader) in otherwords be able to see what there getting for free plus S&H.

Do you have any sample layouts you would recommend for direct response?

I do not see any consistency in photo placement.
On the web they recommend left hand side in print RH side.

Thanks,
Mark

PS what size font would you use for the headline, subheads & body copy?

Would you use Times Roman for the font if your running advertorial space ads in newspapers and magazines?

Look at the articles in the paper/mag you're running your ad in and match them as closely as possible in all areas, you want your ad to look as much like the normal content as possible.