[MrFlippant]

Prusa is a brand, like Kleenex is for tissues. It's important not to conflate "Prusa" with cartesian aka "bedslinger" filament (or FFF) printers. Prusa's wasn't even the first. The first one was a contraption of all kinds of off the shelf parts from hardware stores. Prusa (Josef et al) came up with some bespoke parts for bedslinger printers and started a business of it, eventually making their own complete printers under the i3 category. Prusa i3 MK1, Prusa i3 Mk2, Prusa i3 Mk3, and so on. 

You could say some printers are Prusa "clones" but most of the time, they're not even true clones, just another i3 bedslinger printer of some kind, such as the MANY Creality printers, Elegoo, Anycubic, and so many other brands pumping out the same old stuff with cheap parts and questionable designs.

The Flashforge Adventurer on the page linked above is literally none of those things other than it looks like it might be cartesian as opposed to Core-XY, which is a whole other discussion.

If possible, to avoid confusion when speaking of printers, particularly when recommending specific printers and brands, only use "Prusa" when referring to official, genuine, Prusa made printers and products. If it's not Prusa brand, just call it a 3d printer, or a bedslinger (if the bed moves forward and backward) or an i3 or cartesian.

"Cheap Prusa kit" is almost always NOT a thing.

Thanks!
- That Guy