I think they can just hatch from day 15 to day 20. My Japanese quail supprised me by pipping on day 15, the first one arrived over night, day 15 into 16. But only 2 hatched out of the 4. There's different factors that can affect hatch time. Post some pics through your incubator :D
Maybe they are just more expensive here in the UK :confused:. I've not seen many for sale but it's still early in the year. *Edit they are £99.99 plus nearly £6 shipping :eek: