My mum and I do the same dance every year. She gets a voucher for husband and I but insists on a physical pressie too. Asks what skincare, haircare products I use, I tell her no its fine they are expensive. She insists again. I tell ok but just warning you again, I use expensive stuff (btw it is not hugely pricey, I just know what she considers expensive).
Then she buys them, hands them over in a parcel and literally goes on the whole day about the "fortune" she spent on moisturiser and face wash I use. Its incredibly irritating.