I believe you can still get the coin if you drop a big pile of fiat confetti for the 4 coin set. 30K was the set limit for this coin.
I think the limit on the 4-pc set is 40,000 and they cost about $3600 currently. So far 12,607 sets have been sold with 842 being sold in the last 8 days. I guess with the drop in gold lots of folks jumped on these. From Sept 7-20 they only sold 35 sets, gold was well above $1900 then....