The popular toys usually cost £15, but they'll currently only set you back £7.50.
A user of deal-sharing website hotukdeals says she spotted the LOL Surprise Under Wraps toys with yellow stickers in Tesco in Harrow and ended up buying nine of them.
The idea behind the toy is that you unwrap 15 layers of surprises, including clothes and accessories, to reveal the collectable doll inside.
The Sun has asked Tesco to confirm which stores the cheap toys are available in but we haven't yet heard back.
Yellow stickers are also often store specific, so to avoid missing out you should head to your local store as soon as you can.
You can find your nearest shop using Tesco's store locator here.
Tesco's prices of the toys are cheaper than anywhere else. You can currently get the same ones at Argos and Smyths Toys for £14.99.
But before you splash out, you should be aware that not everyone is impressed with what's inside a Lol Surprise toy.
Livid Ciara Umar dubbed it a "waste of money" after she bought the £59.99 LOL Big Surprise for her daughter Elisa.
Crafty parents can read our guide to making your own LOL Surprise Ball and filling it with worthwhile gifts.
Earlier this week, Build-A-Bear slashed the prices of unicorns, cuddly ponies and bears to £8.
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