Recommendation for power cord replacement plugs
A proper electrical supply house is the best we can advise.   Retail shops with well lighted parking lots, exciting products on the endcaps, and candy at the  counter tend to also buy the cheapest products they can possibly get that won't be  returned at excessive rates.  And who returns a $7 plug? 

You initially shop there for the bargain prices until it becomes habit, but those bargain prices don't come from buying in bulk the way the mythology says.  They come from going overseas and buying products that barely clear safety codes and are not factored for usability.