I took one for the team, and clicked. It goes here:

https://www.amazon.com/dp/039324931X/ref=cm_sw_r_cp_ep_dp_t7...

Interesting that the shortened link is http, while the destination is https. Is that usual?

Ah, and I just noticed that a.co goes directly to amazon.com, so I suppose it's their own shortner. Of course I didn't know that before I clicked.