@Darija11 It could be
1) A glitch
2) The host has just updated their prices
3) The host is using smart pricing which is adjusting relative to demand in the area
4) A glitch
5) Something else
Based on the above 'a glitch' comes up twice but does that make it more likely?
Who knows. I suggest you book a place that is at a reasonable price and don't worry too much about how that price is set.
