Whether to stay put or hop around — and which saves you more.
Staying in one base city means you pay for a single stay and can use day trips to explore the surrounding area. This often keeps transport and accommodation costs lower.
Hopping between cities lets you see more, but it adds transport and extra packing/unpacking. For longer trips it can be worth it; for short trips it may not be.
Add up all the stays and transport for both options. The cheaper choice depends on your trip length and how much you value seeing more places.