That is a nice big frag, but I would still be hesitant to pay a premium price for an all green one. You just don’t know when or if it’s going to develop the red. I paid 300 for mine it was about an inch with a couple small branches. If I had it to do over I’m not sure I would be willing to pay that much. With out the red it’s nothing special, just paying for potential.
i know where that one is coming from and it’s probably very healthy, not trying to talk you out of it. But it’s likely going to take a lot of patience and maybe some luck to get the red.