buy is important, think about other clothes you have in you wardrobe. if you buy something that goes well with your clothes that you already own than it’s a good shopping. you may pick some colors that goes well, or same color but different shade or you can go totally opposite colors and still look stylish.
price: buying cheap sweaters is not wrong, if you don’t have money to buy some expensive clothing pieces and it’s okay but you will be able to wear it only for 2 – 3 years. if you buy expensive sweaters you can wear it a lot longer years. 