GOOGLE ADWORDS SHIPPING COSTS

I'm facing a significant issue with my Google AdWords. The shipping costs displayed are not aligning with the actual rates from Australia Post, causing a mismatch between my website and the real shipping rates. This discrepancy is affecting my ad relevance and potentially my conversion rates.

I need someone with expertise in Google AdWords and experience dealing with shipping costs, particularly from Australia Post, to help me rectify this issue. The products being shipped are all physical goods.

Your skills should ideally include:
- Proficiency in Google AdWords
- Experience with shipping cost integration
- Understanding of Australia Post rates
- Ability to improve ad relevance and conversion rates