wondering if this ram is any good

Oct 22, 2018
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Im very new to building, which should be obvious because I accidentally went with 2666mhz ram with a ryzen cpu so Im on the hunt for 3200mhz ram now I do know that I should go for 16gb,but I am planning on upgrading later but as of now that is not in my budget. I couldn't help but notice that I was finding some rams for $20 more with the same specs, which is making me pretty suspicious

Heres the ram
 
Oct 22, 2018
26
0
40


Oh okay, well is this okay(again im not quite looking for 2x4)

https://www.newegg.com/Product/Product.aspx?Item=N82E16820231939&cm_re=g.skill_ripjaws_2x4-_-20-231-939-_-Product

because as of now the CAS15 3000mhz is more expensive than the CAS16 3200mhz although I though that CAS15 3000mhz = CAS16 3200mhz