This module provides Feeds mappings for Ubercart items, including model, SKU, stock, prices, weight, weight units, and more.

It also adds the ability to include attribute mappings (which are added to the product after it has been created), both for the price and weight fields.

Attributes and Options must already exist in Ubercart.

Backdrop Link: 
https://backdropcms.org/project/uc_feeds
GitHub Link: 
https://github.com/backdrop-contrib/uc_feeds