Vueling is like any other bottom scraping LoCo, they'll give these routes a go and if the load factors don't add up they'll pull them without a 2nd. thought. With poverty wages that would make Scrooge look generous and using an A319, it is possible that they will make a bob out if it when Baby couldn't. Whether they will have any pilots left to fly them in a years time, is another question. Personally, I hope employers like this get what they deserve.
WRT price, I compared a family price to Spain in July with Easy at BRS and found Vueling to be slight dearer after all extra costs applied.