If you’re looking for a better deal on the HTC One S come April 25th, Costco is currently offering the best deal we can find. Not only will you save on T-Mobile’s mail-in rebate, you’ll also pay $10 less than Best Buy’s price of $199.99. That’s right, Costco plans to unleash the HTC One S for just $189.99 and include a $25 Costco cash card with purchase. The $25 Costco cash card requires its own mail-in rebate, but that’s still saving you $60 off your upfront purchase from T-Mobile and you’ll score an $25 bucks to pick up some accessories for the One S later on? Perhaps you use the cash card to help pick up a pair of Beats Audio headphones? Just saying.