CC's graft died, presumably due to old grafting tape not being removed. Can blame whoever.
I agree, well healed grafts with several flushes are ideal for buyers, but maybe not for sellers with limited stock of varieties in high demand. Lots of things can go wrong with grafts in the first months and year or so. Realize there are risks involved.
I had 2 established (5 ft) grafted citrus (kumquat and finger lime) recently die above the graft, with rootstock still thriving. Still don't know what happened.
Personally, I am grateful for Lara Farms selling these varieties via waiting list VS hearing he released a few dozen at one time and they all sold out. I am after genetics. You are not going to find a nice 3 or 5 or 7 gallon G1, G3, or Jamaican mamey for sale unless you get supremely lucky.