Translate product pages automatically
To translate products, you will have to look into Entity translation. Make sure to check the Title module as well which allows to use a field for the product title so that can be translated as well.

For the automation/mass management part, have a look at the the Translation Management Tool* project. The new alpha2 release now integrates into the default Translate tab added by Entity translation and there is also a generic overview for all translatable entity types that allows to mass-translate (by sending a job to translation agencies, machine translation services, export as XLIFF and translate in a desktop tool, ..) entities, which includes products.

Note that the project is in alpha which in this case means that it hasn't been tested on many real sites yet, especially not the new entity translation integration. It has an extensive automated test suite though and is well documented (there is even a introduction video now!).

You can also translate product displays (nodes) using the same tool chain.

*Disclaimer: I am the maintainer of that project.