I would recommend making each of your fields in bold as Tables instead. Then, your Offers table would be where all data points interact (e.g., then in your Offers table you could have something like the date of the offer as your primary field, linked to a Name, linked to an item Number, and linked to a Location). But that’s just one suggestion.
As far as finding your highest bidder, this is where linked records come into play. For example, if all your offers were linked to a give Number, you could use a Rollup field to find the MAX(values) of all linked offers (and subsequently add formulas to find out which Name is your highest bidder associated with your MAX(value) of offers on an item).
I’m not in a position to provide step by step instructions at the moment, but this might help:
What sets Airtable apart from ordinary spreadsheet applications is its ability to link related concepts together. Knowing how to represent the relationships between different groups of objects can ...