Fisher Price Power Plus Swing Review

The Fisher Price Power Plus Swing has been the best investment so far with a new baby in the home.  With my daughter, I had a different swing(it's long gone).  With a new granddaughter in the home, trying to be very practical has been a serious issue.  I spotted this swing on eBay.  It has the unique feature of being able to be plugged in(in addition to using 4 D batteries like most others) to save on having to buy batteries all the time.  It has multiple speeds, music, lights.  It also has a few different positions(I don't recall exactly how many).  It's not a very bulky swing either, so space issues are not a concern like they are with some swings.  I was surprised, as well, with the price.  It was in the $70 range.  A bit less expensive than most other swings, with this one having far more appealing features than many others.  This particular model seems to have been discontinued, which is surprising, considering the plug-in feature alone, being so appealing to, I'm sure, many people.   Considering how impressed I am with this particular swing(I had to buy it on eBay, but was new in box), makes me wonder if I'm missing something that it was discontinued??  Personally, we LOVE it!!  I would hope Fisher Price(or anyone else, for that matter) would come back out with a swing with that feature.  It SHOULD be standard to have a plug-in option.