Rod,
Here is one listed on Amazon for 389.00... it's the Kelant S400s which is supposed to supersede the S400. There are 24 questions by users, 61 reviews and it gets 3.4 out of 5 stars and there are free returns (until Jan 31, 2021). Double check the return policy to make sure it is handled directly by/through Amazon... if yes, it's probably worth a trigger pull.
https://www.amazon.com/KELANT-...606380424&sr=8-3
dennis