Hi guys - wondering if anyone that had migrated to UK recently can help me with this.

I landed a job in the UK recently. I plan to bring my family (3 dependents) along. My Visa will be paid by the employer, but for dependents, I have to pay for myself. May I know which is cheaper for Visa application purposes?

1. I went to settle there first and my dependents join me after?
2. We all went for visa processing together?

Tried reading through the gov.uk website and it seems that option #1 is cheaper. Just wondering if anyone can give insight.