SkyEurope did not move Eastwards over the recent years. Looking geographically, they moved more to South-West, e.g. CEO Jason Bitter has terminated the base in Krakow and shifted its planes to Vienna.
Two airlines get easily confused. It's Wizz that started flights to e.g. Ukraine and Bulgaria. Sky tried to seek other solutions, but it didn't work. Concerning the fares, they are very low nowadays.