If you have decent electricity coming into your house, an inexpensive unit is not going to do much, if anything at all, unless you just want a surge protector, which opens up another can of worms.
My recommendation: save up for an Inakustik 3500.
Power Conditioner
been using Twice Power Block for decades, considering something new, but do not wish to break the bank....recommendations for good choice in USED market, PLEASE!