I think you will find the release of the 2oz and 10oz Monkey has been delayed for a while due production delays and recall reading a thread on here about this a while back
Suggest you may like to check the Perth Mint website or call your local dealer
Ah, I was just about to ask this same question. I'm a fan of the 2 oz size so usually pick a couple up in addition to the 1 oz. But I can't find the 2 oz at my usual places (in Australia I tend to buy from Gold Stackers, and in the US from APMEX, but both are 'sold out' of 2 oz monkeys).
If there's a known delay with these then I guess I just have to wait