That's like an acetate "dubplate" that promoters used give to club DJs to get new music out (mostly replaced by digital files now of course). They were good for a small number of plays and used just to gauge the crowd reaction.

When you make an actual record you cut an acetate of each side on a record cutting lathe, which this product is a toy miniature version of.

Each acetate looks like a one-sided vinyl record only bigger (it's got margin around the edge). You can take that to a club and play it, but normally you take the pair to a pressing plant. They make a metal mould of each one and use them to press the vinyl records.

When I was a teenager in 1979 my band made a single on our own indie label. We got to go to see the legendary cutting engineer Porky in London near Oxford Circus and watched him cut the pair of acetates. Like all his work he scratched "A Porky prime cut" into the run out area.

A normal master is cut in metal, not acetate.

That metal positive is then plated and turned into a negative, and then the stampers are made from the negative.

Right, because this is the same process.

Having listened to the samples they provide, I'll argue that the lifespan is about 0 plays, they're basically DOA.