BigCommerce Product Listing

I'm looking for assistance to update my products with Year make model information on my BigCommerce store. Their is not a way to bulk upload this and it must be entered a line at a time. I have a spread sheet with fitment and the listing ID's... (Budget: $250 - $750 USD, Jobs: BigCommerce, Data Entry, Data Management, Data Processing, Excel, Product Descriptions, Product Management, Website Management)