Yep. Good example, by the way. The first panel on your list is only 5W (almost useless power wise, also with an unreliable USB receptacle design), but costs $100, which is two times more compared to the goalzero nomad's like designed (perfect) 15W panel of your second choice (which is 3 times more power!). And they are sold on the same Amazon. Greed. I bet we'll see 10W panels like that for less than $10 pretty soon.

Several months ago I've soldered a high end cells (Sunpower Maxeon) based 15W solar panel (square foot size) which I've got off eBay for just $15 shipped (all the soldering hardware and even special soldering flux included). Today I can see that you can get 36 Watts of them for just $14 shipped:
http://www.ebay.com/itm/Sunpower-Maxeon-...or/252161621943

For the power bank there are zillions of ugly options on the market. However there is nothing comparable to what I was hoping to get with at least 15Ah, but with the really well thought out design for EDC (by the way, I took a $6 refund instead of returning that PB above, will try to combine 2 batteries inside).