About 10 years ago, I had to do a php/mysql online shop for a customer, and I did not had much time for the backend.

So I bought a ~$100 product, I think it was CodeCharge Studio from YesSoftware. I was skeptic, but I had no option.

Turned out great. I was ready in a day and it looked very good. You could generate the admin site in multiple languages and it was very easy to use.