Over the years, I noticed Polk Audio has increased there prices ranging from 1.5x to 2.0x+ (USD). Polk T50 used to sell for ~$75 to $100, now for $200. Polk PSW10 used to sell for ~$100 to ~$130, now $180. I remember when the Polk S20 was priced at $300 and would sometimes go on sale for $250. The newer ES20 are always above $320.
T50 Price History:
T50 Price History: