If you're lusting after\u00a0Samsung's hot new Galaxy S6\u00a0but are put off by the price, there's a way to shelter your bank account and still buy the new smartphone of your dreams: Sell your old one.\nLast or past generation Galaxys, iPhones, and HTCs are still in demand, and it's easier than ever to sell them. And there's no shortage of sites that either buy phones directly or hook you up with buyers, including\u00a0Glyde.com, Gazelle.com\u00a0and Nextworth.com. Plenty more of these sites exist, but these three are representative and none has a significant number of complaints. (Check out this post I wrote last fall for tips on how to get the most money for your used\u00a0smartphone.)\nThe new Galaxy S6, like the iPhone 6, is pricey. U.S. wireless carriers plan to sell\u00a0the 32GB Samsung Galaxy S6 \u00a0for between $650 and $685 without a contract, and you'll spend another $100 to $129 in premium pricing for its stylish cousin, the GS6 edge. Both will be available for purchase on Friday.\nHow much can you get for your old phone? Obviously, the number varies by model, age, condition of the device and the carrier. Prices also tend to vary from resale site to site, and you can assume that the longer you wait to sell, the less money you'll get.\nHere are some representative offers for older Samsung Galaxys from Glyde:\n\nSamsung Galaxy S4 16GB - Black - AT&T: $133\nSamsung Galaxy S4 16GB - Blue -\u00a0Sprint: $78\nSamsung Galaxy S4 16GB - White - T-Mobile: $151\n\nAnd here are some prices for iPhones from Glyde:\n\niPhone 4s 16GB - White - Verizon: $62\niPhone 4s 16GB - White - T-Mobile: $90\niPhone 4s 16GB - Black - Sprint: $29\niPhone 4S 16GB - Black - AT&T: $79\n\nI went to Nextworth.com and searched for a price on the black, 16GB AT&T Galaxy S4, and the offer was significantly lower \u2014\u00a0just $73. The popular\u00a0HTC One M8 (32GB) will net you $235 on Glyde, but only $113 on Nextworth and $175 on Gazelle.\nAs I mentioned, these prices are rather fluid, so I recommend checking your specific model on a few sites before you decide to sell your old phone. And while some companies say they will delete all of your personal data when they receive your phone, it's a good idea to wipe your device yourself \u2014\u00a0just to be safe.