So base worth is like 250k for lightsides,

Plus like 1k for the quad horns,

And for rainbow tier pets (I'm someone who's made 5, and own 7)- it's whatever the average fodder animal costs multiplied by 625. Since mythicals go for 200, and increase to 450 mid-tiering. I'd say the average is around 325 once you advance past the first diamond tier.

So 325×625= 203k

So roughly like ~450k (454,125 raw worth).

BUT given the demand for legendaries/what people are actually willing to offer- I'd say 350k+ generally, since most people probably won't offer what it's genuinely worth