The GeForce GTX 750 Ti has been rumored to launch on February 18th, but way ahead of the launch an ASUS-branded version of the card has been listed on many different foreign retail sites for around $225 US. The card is listed as the GTX750TI-OC-2GD5 and will feature a factory overclock and 2 GB of memory.
There really is not that much exciting about these early Maxwell cards as they are basically refreshed GeForce 600 mid-range models. As we said earlier the GeForce GTX 750 Ti is said to launch February 18th.
Source: TechPowerUp! | News Archive
AMD is better in this price range currently I think, You can get a Gigabyte R9 270x with 4GB of GDDR5 for about $240.