Car insurance on Hemi swapped cars

I was on Hagerty getting a quote and my insurance agent just contacted me with a quote from Hagerty, has guaranteed value and they are getting a better price than I could. I even matched up all the options to their quote.
Agreed. When I went direct to Hagerty I got a quote for $x,***, but when my insurance Broker went to them, they came back with a quote that was about 10% cheaper. Don't know how that works, considering the Broker is a middle man with mark-up, but who cares? Saved a few bucks.