Eloping experience

I'm after people experiences on eloping. My and my fiancé have been engaged for just over 2 years now. We had planned to get married the beginning of this year but after my partner was hit by a car we never got any planning done as we were focusing on his recovery. 
I honestly just want to elope, I don't see the point in spend a ton of money on a wedding ( yes my fiancé is a groomzilla and wanted a big wedding) I despise his sister and will never forgive her for what she has said to me. My family don't mind what we do as long as we are happy. 
Just want to know was there any regrets later on, how much did it cost, did you have any celebration with family afterwards etc....