Last time I had to use a commercial wifi hotspot, Swisscom did charge me with EUR 17,- for a mere 24h. That's pretty hostile to me with EUR 1.41 per hour.
Spending some quality time with my family on the dutch island Texel, I enjoy the hospitality of HotSpot Texel. They charge EUR 10,95 for seven days. That's a 168 hours or a friendly EUR 0.07 per hour.
Why I need Wifi while spending quality time on Texel? Simple: Skyping and weather forecasts.