We visited during a stopover enroute to Stonehenge. We had time to purchase 4 boxed buns. I found them not very remarkable, but I believe we missed out on the real experience of Sally Lunns. After reading the reviews I realized we probably didn't know how to properly prepare and serve them with toppings.
We are returning in December/January....so perhaps we will do tea and properly prepared sweets on our Lunns Buns.
I gave it a 4 for charm and a chance to see something completely intact for hundreds of years. We have very few examples like this at home. See you in a couple months.