Param B.
Legitimate lab, quality product!
I needed a new hawley retainer, but none of the orthodontists in the UK were willing to accept 3d scans of my teeth and just make the retainer. Instead I would have to register as a patient, pay expensive examination fees and only then could I get a retainer made (with a significant mark up from the dental lab). After an internet search though, I found Midway dental lab. Comms were via WhatsApp, really quick and simple. They made upper and lower hawley retainers from my STL files for $250 including postage. Paid via PayPal with buyer protection. I was impressed by the quality of the retainers as well as the shipping speed. Less than 4 days from sending, including the weekend! I will definitely use them again if I need another retainer.