To address the inevitable whats the difference? question upfront, these are not VST baskets any more than the Chinese rip-offs of the our Barista tamper are the real deal. Every basket, VST included, has variations in hole size and shape no matter how its made. Once manufactured, VST baskets are imaged in high resolution to check hole size / shape / consistency (this data is used to produce the spec sheet supplied with each VST basket) and yes some VSTs do get rejected. This is a slower and more expensive process than just manufacturing and shipping but its what ensures perfect consistency basket to basket which is the whole reason VST baskets were made. As thats all a patented process you can be certain no other baskets get that, meaning theres no more guarantee of consistent performance than there is with any other basket.
For 1/3 of the price these units may well suit some people so it will be very interesting to hear what the results are. Some VST users have found their technique doesnt lend itself to good results from VST baskets so some of those may drift towards these units. But dont for a moment be under any illusion theyre the same thing as a VST.
Hopefully this will answer the obvious questions upfront and the rest of the thread can focus on the in-the-cup differences.