Sennheiser Ambeo Smart Headset availability or reasonably priced options

Hi all, I just wanted to post here to ask if anyone knows of any stores or resources that still carry the Sennheiser Ambeo Smart Headset for a reasonable price. I know Amazon used to sell them for around $50 and that went on for quite a while, but it looks like those days are gone and they have been out of stock for a few years now. The cheapest I am seeing on eBay is around $200 and I really cannot pay that right now. The maximum I could do is about $100. If anyone happens to have a pair they would be willing to part with, I would be incredibly grateful. Thanks for any assistance you may be able to provide.