Agreed, Kiwi works well. Ive been satisfied using PriceDropCatch for years now and it saves me serious cash. TLDR: Use Kiwi browser + web trackers.
Are you shooting video? Be careful with low light in Kyoto. I once used a used Sony E 18-135mm f/3.5-5.6 OSS to save cash, even if 18mm is kinda tight...