Best Websites to buy Overcoats/Topcoats?

I am searching for good websites to buy myself a coat but always end up on sites like "Zalando" or "Etsy".

I'm searching for a site where i can buy an Overcoat or Topcoat that's not "trendy" but rather conservative. I want something that's somewhat elegant but not too formal (it's for everyday wear with a pullover or turtleneck, so nothing to wear with a tie or suit). The price range should be from 50-400€.

If someone knows a site where I could find something like this I'd love to hear your suggestions.