Funny Graphics Card Pricing

[whiteGloveReview]

So I was watching Linus' Viewers Choice Award vid, and he reminded me that the rx 480 is a thing. So I got on amazon and looked up the rx 480 and i just laughed a bit.

I was focused on the "reference" style cards when I was browsing because they were the ones that were the first on the shelves so nothing custom because I knew they'd cost more than the MSRP of the "reference".

 

https://www.amazon.com/VisionTek-Products-Polaris-Graphics-900888/dp/B01HDUVQZC/ref=sr_1_15?s=pc&ie=UTF8&qid=1489564206&sr=1-15&keywords=amd+rx+480

https://www.amazon.com/VisionTek-Radeon-GDDR5-Blower-Graphics/dp/B01KDYKA8E/ref=sr_1_4?s=pc&ie=UTF8&qid=1489564206&sr=1-4&keywords=amd+rx+480

https://www.amazon.com/XFX-RADEON-Graphics-Backplate-RX480M8BFA6/dp/B01H3P9CKI/ref=sr_1_3?s=pc&ie=UTF8&qid=1489564206&sr=1-3&keywords=amd+rx+480

 

I love that, with the exception of an overclock or something that I'm missing, these are the same cards. but yet only one of these (the last one) is actually at MSRP at launch.

Am I missing something here? are the first two doing something different than the third that's worth a price markup?