KPrepublic have a tester that includes all four of the Glove80 switches (Brown, White, Red, Red Pro) [0] and also a cheaper one that excludes the Red Pro [1]. (I ordered the cheaper one after reading the review.)

[0] https://kprepublic.com/en-gb/products/kailh-choc-switch-test...

[1] https://kprepublic.com/en-gb/products/acrylic-switch-tester-...