If you don’t want to splurge, your best bet is this Liz Claiborne Open Cardigan. It's a fantastic product, while not very expensive. Another strong contender for your wardrobe is this Open Cardigan. While the price of this product is not too high, it will surely attract a lot of attention. You may also want to look at this Unif Open Cardigan. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for a bargain, consider choosing this TSE Open Cardigan. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth looking at this BCBGMAXAZRIA Open Cardigan. This piece is extremely popular and, just as importantly, not too pricey.