Go to rug store, get a feeling of price range, type, style and quality, then go for price shopping.
不纯羊毛的,就是很现代 are usually inexpensive $200 (Homegoods sale price)-$2000 (rug store, at discount price) depending on where you get it and if you are locked to a certain design.
High-end fine wool rug can be easily $10K-30K. The most expensive I saw in rug store was $100K.