I tried to install the module, but saw the messages that it's impossible:

Marketplace Products 6.x-1.0-beta1+36-dev REQUIRED. Facilitates the handling of products created by marketplace sellers.
This version is not compatible with Drupal 7.x and should be replaced.
Requires: Product (enabled), Image (enabled), File (enabled), Field (enabled), Field SQL storage (enabled), Store (enabled), Order (enabled), Rules (enabled), Entity tokens (enabled), Entity API (enabled), Views (enabled), Chaos tools (enabled), Marketplace Product Tools (incompatible with this version of Drupal core)
Required by: Marketplace File Downloads (disabled), Marketplace Orders (disabled), Marketplace Product Kit (disabled), Marketplace Shipping Quotes (disabled), Marketplace Reports (disabled)

I use 7.14 core.