First off, this is a good quality product. This tester includes several harder to find switches, and gives a good sense of what different types of switches feel like at different weights.

However, there is a major problem, which is that the data listed on this page is incorrect! I have seen this chart in several places online so I don't know if this is the source or if it was copied from somewhere else, but several of the weights are simply wrong.

CORRECTIONS:
Black, Burnt Orange & Pale Blue all use 60gf SPRINGS, not the weights listed. Jade uses 50, and Navy appears to use 70. It is very easy to tell when testing this in person that the listed weights are incorrect.

For that reason, as well as the long shipping time (two weeks, with poor tracking), I am knocking two stars.

The switches come loose, there’s no case as depicted in the product pictures. Deceptive advertising.

Pack is just switches, so it's likely you don't have a compatible board/mount or the keycaps to adequately test them. I think I would have been fine with even a single 3d printed mount/keycap. I printed my own for convenience in testing, and ended up loving the Jades and Robins the most. It would be nice if Chosfox had a cheap option to include a small kit to help with this, but I got what I ordered and it was enough to make a decision

Arrived quickly. I used it to assess which switches I'll get more of for hoswapping into a Junk food Micro fight pad. Likely Jades and Dark Blues, surprisingly enough.