They help their clients to serve better to their customers by providing them the tips and tricks regarding the choice and preferences of the customer.

They keep an eye on the body language of the customer and observe their purchase pattern and offer them different stuff as per their observed behaviour.

They also offer customers access to a loyalty program, discounts and gift vouchers. Review collected by and hosted on G2.com.

As they observe the clients first and then start offering, in this mean time customer can change their mind. They charge a handsome amount for their services with their partners which can minimise the profit of the seller or you on the other hand it can raise the price of the product. Review collected by and hosted on G2.com.