Does anyone have any recommendations for a good ETL (Extract Transform Load) product that integrates well with NetSuite? Another requirement is that it provides an extensive set of connectors for other systems with the ability to make our own adapters. Also, something that might not be as cost prohibitive as Mulesoft. I've used both Dell Boomi and Mulesoft. Mulesoft is fine, but it has such a high price point.

Depending on your use case you should look at Celigo

Just about anything will integrate with Netsuite. Airflow is an option.