Pastel Calico/Pastel Sugar

[Seven-Thirty]

If they are different morphs how do I tell them apart?
If they are the same morph why do I see Pastel Sugar being priced higher than Pastel Calico?

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The problem here is that they are different lines of what is considered the same mutation. The reason a pastel sugar is priced higher than a pastel calico is that Sugars are considered to be superior to calico but there is a problem with that in that finding a line of sugar that isn't actually a calico is extremely difficult due to everyone mixing the names and lines up.