what is power point cover?

I apologize, upon searching PriceCheck I did not find any results specifically for "power point cover". However, based on the term you used, I believe you may be referring to safety covers for electrical outlets. These plastic or metal covers simply screw or plug into an electrical outlet to prevent little fingers from accessing the holes and getting shocked. They come in packs of various quantities and range from around R30-R100 depending on the brand and number included. Safety covers are a cheap and easy way to child-proof your power points around the home. Please let me know if you need any other details or have a different product in mind.