Funnily enough that’s more or less the opposite in germany. Amazon used to be good and had everything but now it’s flooded with cheap chinese garbage. Some products you won’t even find and if you find it it’s often fairly expensive.
My last two mechanical keyboards I bought were from MediaMarkt and ComputerUniverse. The Mediamarkt one I even got in a local shop at a reduced price because it was the display model. In general the local shops do have a good product selection here. At Mediamarkt I could try several different mechanical keyboards with various switch types.