How to handle AWS Marketplace offers in DRAFT state created in error

I'm working on some automation to help create AWS Marketplace private offers using the marketplace-catalog APIs with boto3.

During testing, I submitted catalog change sets that results in a number of dummy/test Marketplace offers (EntityType=Offer) currently in DRAFT state.

I haven't been able to find a Marketplace API that supports deleting offers and not sure what to do with them.

Questions

1. If I leave the offers in a draft state, will they stay there indefinitely? Do they automatically get cleaned up after a certain period of time?
2. Is there a limit to how many private offers can be in a draft state?
3. Is there a way to delete them?