A friend I know tells me that they ordered a cheap knock off magic wand vibrator off eBay and after 3 months it never showed so they went to a sex shop and paid 200$ for the real deal. The fake one finally arrives couple weeks later but comparing them the fake one is just as strong but also has added features like different pulsations and more speed control. The 184$ difference will easily sway people to buy such products.
Even without electricity, there's plenty of horror stories about sex toys--particularly dildos--made with unsafe materials. Some materials can cause allergic reactions, others are carcinogenic.