You're still good for latte prices. I just got back from eu/uk and was horrified that it's nearly 10 bucks for a small coffee in most places. Even Starbucks costs double what it does in Australia.
It's still about $5 for a small barista coffee. Ironically, the cheapest good coffee in Melbourne is at 7-Eleven ($1.50!). A can of Coffee Boss is around $4. About double what I was paying in Tokyo 2 years ago. It's not even imported. Drink the fresh stuff.
Fast food and restaurant meals are absurdly expensive in Melbourne compared to Japan.