Thats really hard to say, there are fire bees that have a good bit of yellow and there are ones that are whiter.

There is also a lot of variation in enchis and the quality of pastel makes a huge difference. For instance, my enchi bumblebee girl is sitting close to 900g and is still as bright (almost blindingly so) as she was when she was a hatchling, whereas her brothers browned out around 350g.

Sorry I can't be more help but I would only pay what the less costly one is worth.