~0.5kg of assorted leaf teas for 90€? I'd say it's on the cheaper side, at least in comparison to what I can get either here, or by importing.

In other words: if you're going to drink it, fingers crossed these are good. If the okumidori is what it claims it is, it'll be worth it (although if I can read this properly, one brew off of a serving there seems to be on the low end; try steeping it more than once).