Schema for Rebate

[meqdiw46ao]

Let's say I have a list of rebates available in either a fixed or percentage based format.

I'm looking for the most appropriate schema.org code to use for this, currently using aggregateOffer for the list and referencing the name of each rebate, but search console advises that "lowprice" isn't specified, and I only seem to be able to specify a fixed price in the local currency here. I don't think using "lowprice" is appropriate here because this isn't a list of products with the lowest price, but it's a list of rebates to choose from.

Is there anything that is more appropriate to use in this case than aggregateOffer?