At the end of March 2014, I bought a replacement Delkin Universal Dual charger from Morrisphoto (UK). I also got a pair of LP-E6 plates, this time from Hamkes Photo Video via Amazon.co.uk. (I stupidly lost the previous charger somewhere). So they were both available a month ago, in the UK.
One thing I have noticed with the replacement Delkin - the replacement doesn't always kick the shutter count on the battery info back to zero after a full charge. Hit & miss - I can live with that for the sheer convenience though.
I too wondered if it had been discontinued; it's certainly falling into the rocking horse effluent/hens teeth category at present. Shame if it's gone, a very neat and useful charger and I still have my AA plate and the one for my NB-7L (phew!). Worth hunting round for a pair of LP-E6 plates in my opinion, especially if you run multiple cameras and/or battery grips.
Try Amazon.co.uk and, surprise surprise,Amazon.co.uk for the plates.