I believe both the athlete and adventurer for generation 1 were for sale, maybe still are, at REI online.
Would be great if generation 2 was also distributed via REI.
I'll add a little more detail on why based on my gen 1 experience I hope gen 2 is also offered via REI:
After purchasing my gen 1 Adventurer at REI, I right away noticed into an issue with altitude not recording accurately. After troubleshooting with Garmin support we determined it was probably a hardware/barometer problem.
Luckily I was still within the 90-days no hassle return period for REI and I simply swapped it for a brand new unit. And that one worked perfectly :-)
So REI offers a super easy and stress free way to purchase an expensive item like this and rest assured that if there are any problems you can easily return/replace for a new unit.