How to make desirable meta description on eCommerce website?

[CommercePundit]

Today, I have read very interesting blog post about meta description:Improve snippets with a meta description makeover

I have developed meta description on my eCommerce website. [Vista Stores]

Home page, category page, static page and blog post contain user generated meta description but, product page have auto-generated meta description.

What is best method to develop meta description on product pages for eCommerce website?

[SEOclient12]

Ideally you would look at which sales pitches have historically driven the best results for your products and test these online (are these prices, benefits of the product etc).

If you have any tactical campaigns surrounding the products, I would include these within the description and change accordingly to when they start/finish