What I had gathered from reading different threads around the 'nets was that lesser and butter are the same. They were just proven out by two different people so they ended up with two different names. People keep the different names to try to show which line it originated from or as you were told, they interchange the names. As for one being cheaper, aren't they both about the same price? I think they are both beautiful!
Not the best pic but here is my lesser and butter pin together, they are both still young
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