Not in this case by the looks of it, but usually we do.
Shops typically have both the actual price and the no-tax price on their labels.
So how long until you guys stop doing that and only use the real price? It might be the most frustrating part of visiting Japan. Feels ironic considering how correct and customer oriented Japanese shops are.
Probably never, and part of that probably is because Japanese shops are customer oriented.
I mean, electronics stores make a pretty big deal of the fact that foreign non-residents can pay the tax free price, so it's probably worth displaying the tax free price for that reason. I believe it's only really for purchases over either 5 or 10 thousand (can't remember which), but still.