So as you are probably skeptical I was myself hearing about all the fakes out there this seemed too good to be true! 35$ is what most decent 128's are going for! But, this was a rather high end 256 if you believed the packaging!
Well, the packaging was correct! In a cheap USB 3.0 card reader I first did my speed tests and got 37 read 33 write making it a U3 class card and than it was on to putting some files on and taking them off. I started BIG, this was a update to my 128 Samsung evo U1 in my switch. It currently had 115 gig on it from my installs on my Switch. Took about 50 min to transfer that off the old chip averaging 35 mbps copying to hard drive. I than added a few files to the backup bringing it to 155 gig and put them back on the card. This took about an hour and 10 min averaging 33 mbps. Booted up the switch worked perfectly ran a few random Switch games worked flawlessly.
I am very impressed with this upgrade and only wish I had done it sooner!