Nathan & Moe jewelry inquiry

Does anyone happen to know how much Nathan & Moe Jewelry originally sold for? I found a seller that is asking $500 and I’m completely clueless if this is a fair price or what the market value is. I’ve looked online and there just doesn’t seem to be any information out there. Anyone buy these back in the day or have any knowledge they can share with me? It would be greatly appreciated. Or if you have any in your collection that would like to sell please let me know 🧡 Thank you 😊