RadioShack is capping off its Fresh Phone February promotion with some trade-in deals for hot and current handsets. All of their Galaxy S phones, including the brand new Samsung Galaxy S 4G on T-Mobile, will be available for a guaranteed $50 off when you trade in your old handset. In addition, the HTC Inspire 4G will also get the special treatment. After trade-in, the purchase of the Inspire via RadioShack will set you back a scrawny $49.99 on-contract. The Galaxy S 4G will cost $99.99 after trade-in, and other Galaxy devices will range from $49.99 to $149.99. At those prices, they’re practically giving them away (well, not really, but you get the point…).