Almost all of those mouthpieces can be found now at reasonable individual prices on eBay. As the incurable minimalist, I’m partial to the little one that looks like a chess pawn, the MP-142. There’s a trombone model the MP-191, two trumpets the MP-131 and 132; the one with the gold colored tip is the MP-141, which comes with the ProV37 and Hammond 44; the standard Suzuki mouthpiece is also in the kit, the MP-121. I don’t know the one in the middle. If you don’t see the one you want on eBay, check back, as they come and go.