Power Conditioners

Are you sure? If you're correct, your voltage is quite low and out of spec. Nominal voltage in the US is 120VAC ± 5 percent, so you should measure 114VAC minimum.

My exact voltage is 114.8v. You are correct that 120v is standard, however voltages vary greatly depending on your grid. Regardless of voltage, are cheap ac conditioners worth it?

Don't bother with the cheap conditioners IMO

Those two are nothing more than overbuilt power strips. For not much more you could get a Synergistic Blue or Orange outlet that really would make a difference. But there's a lot of other more cost effective improvements and it would make sense to do those first. 

If you need more outlets get a cheap power strip and don't sweat that it looks like a cheap power strip. If you want better outlets go Blue or Orange. Or even better get a used Synergistic Master Coupler, there was a guy on here recently with a whole bunch of them for only $200. He may still have a few left.

@tvad +1 Likewise, although I have only tried lower priced Furman products as a point of comparison. 

The only conditioner that has had an obvious and positive affect in my system is the AudioQuest Niagara 1200