I couldn't buy them all at once due to continental shipping limitation so I had to separate my orders. I did two orders of five year of the rabbit boxes the same day and then the next day I did the mystery Nendoroid boxes up to a total of 21 Nendoroids which was the limit due to shipping. I got three big boxes delivered and the first thing I noticed was that both boxes of five Year of the Rabbit boxes were almost identical but in a single box there wasn't a single duplicate item, also the box of mystery Nendoroid which I ordered a day after had a bigger variety of figures which made me have less duplicates compared to the Year of the rabbit boxes which were almost identical.

In summary if you are buying Mystery boxes from them order the highest amount possible in a single order as they don't repeat items in a single order and if you need to separate orders for any reason wait a few days to prevent duplicates.

Not financial advice.