​How to explain my customers that our prices are cheaper only because we are not greedy?

I operate in an industry which has made people believe that extremely high margins are normal. Now we have started to shift our focus from b2b to b2C. Because of this, we are currently offering our products at half the price compared to our competitors. We sell the exact same products, just at a lower margin.

I constantly get customers that ask us the reason behind why our product are so much cheaper and I give a brief explanation about the situation but I think most people don’t believe it.

What would you do to get this point across.

Edit: thank you all for the suggestions.