Today I got a couple of cassettes as a gift, I didn't know some of the companies that made these cassettes, I had never heard of them
Some of these cassettes are very likely what is called a TYPE 0 (meaning they are not manufactured under a standard). There are 2 videos below that I recommend watching in this regard: The HBATEC is clearly an imitation of the TDK D, that sticker is very similar. The rest of them don't ring any bell. Maybe other members know more.
Yes. Back in the day you could buy three or even five Type 0s for the price of one Sony. They were typically sold at markets and pound stores.
