It's just another reminder what a greasy company Razer is. They should be avoided because their products are mostly crap, sold at high prices. I remember taking apart my Deathadder about 8 years ago after the left-click went on the fritz, and it was the crappiest, low-quality PCB I've ever seen in a product. I never bought Razer again after that.
Edit: To elaborate, they could have spent like 5 extra cents to get a nicer PCB, but they didn't. The mouse was really nice on the outside, but they cut every expense on the inside.