It's a fairly basic charger for the pro 12V series but handy as a second charger maybe, to keep those batteries charged up on a big job, or to keep in the toolbox.
It's a 2A charger, not 3A as stated in the description.
Normal price is around £16 (eg on Amazon).
Free delivery if total order over £50 (may need code BFEX, haven't checked), otherwise £4.95.
Don't forget to register for 3 year warranty.