AC adapter for SLT-A77V? (any alternatives?)

[MonkMayfair1937]

Some good (and very helpful) folks in another part of the forum convinced me that in the short term, an extra battery is the best option. I would like to pick up an AC adapter eventually.

Furthermore, those folks helped me with my massive noise problems on the A77. It appears the camera shop stuck me with the wrong lens for my needs; a Tamron 18-270mmF/3.5-6.3 Di II PZD. I need a lens which allows more light.

For the SLT-A77V (2012 vintage), is the part ACPW10AM the correct official Sony AC adapter? I can't find a mention in the user manual.

Furthermore, is there a safe non-Sony AC adapter? $99 is kind of extortionate. B&H has it for c. 76, but I read one user review saying that it was not that part, and was the previous model.

Just touching base to see if any Sony-dedicated members have found anything, before I go and buy stuff?