Never After (Never After Series) by Rebecca Lickiss looks like a self-published book but it was originally traditionally published in 2002--I know since I have the paperback on my shelf and there is also a link to the paperback with the cover above. It is currently FREE in ebook format on Amazon and probably in other countries on Amazon although I cannot verify that.
Book description:
Once upon a time the anxious Prince Althelstan went in search of a bride ...
His restless cousin, Lady Vevila, went in search of adventure...
His friend Mazigian, proud graduate of the Recondite University, went in search of employment...
And each found what they were looking for—by following a folktale to a remote castle buried in thorns and briars. Behind its foreboding walls, one princess and three identical princes are cursed to eternal sleep. And it's going to take a mysterious dwarf named Rumplestiltskin, an enchanted toad, a wicked stepmother, and one even more wicked miracle to wake them. All it takes is one kiss, give or take a few, and a fairy tale really can come true.
There is also now a sequel only available in ebook, Never Say Never After Again (Never After Series). Yes, unfortunate covers, but on ereaders you don't have to look at those much anyway.