Prusa started the i3 style printers but the printing industry has expanded well beyond the original Prusa i3 to include many i3 clones. These clones are often cheaper and many print quite good. With these readily available clones, should you still be buying Prusa brand printers?
I bought the kit version of the Prusa i3 MK3 printer in early March and received it early May (note: mine came with B2 parts). My MK3 was not a review unit so I did not get the fancy powder coated PEI spring steel sheet that showed up with reviewer models. I still don’t think they are shipping the powder coated PEI sheets in any kind of volume so my recommendation is base your purchase on the performance of the double sided PEI sheet instead (spoilers: it works fine).
So what does the Prusa i3 MK3 have that the Prusa i3 MK2S (and older) doesn’t have?