5oz ATB

It really all depends on what kind you want to collect. There are two versions, the bullion version, which is just bullion and priced as such. They are minted in bulk and you buy it from a coin shop/auction/authorized purchaser. Then there is the collector version. Minted more carefully, one at a time. They are encapsulated and boxed with a COA and are bought from the mint for a "collector's premium", or on the secondary market. And of course there are the graded ones which command the highest premium.

The pricing is going to depend on which ones you choose to collect, the year of issue and the overall mintage. The first year 2010 and 2012 are low mintage years and can be expensive. The cheapest way to go is the bullion issues, except for very low mintage years, they will be closest to spot.

I agree. A decision has to be made which of the two types you want to collect and why.

The bullion puck is bullion and mintage numbers should be irrelevant. Premiums, as mentioned, are $4-5/ounce and price moves with spot. Nice looking specimens.

P pucks, aka "Collector's version" come nicely packaged and have a different almost satin finish than their brothers. They are great to collect and value IS dependent on mintage numbers. Raw or graded could be another choice with these.
Bought direct from the Mint premiums are around $8/ounce with the subscription discount (depends on spot price for premium amount..doesn't really move directly with spot but can be adjusted.

I think both are cool but the reasons for buying each are different.