The Samsung Galaxy Ace phone is available online through Amazon.com and Walmart.com. Amazon.com offers the unlocked version of the phone, while Walmart.com offers a prepaid version.
The unlocked Samsung Galaxy Ace is listed at $98.99 on Amazon.com, as of March 2015. The unlocked phone is compatible with GSM carriers such as T-Mobile and AT&T. The Galaxy Ace has a 3.5 star rating based on 756 customer reviews.
Walmart.com lists the Samsung Galaxy Ace prepaid version at $129.88. Straight Talk provides prepaid phone service for the Galaxy Ace. Walmart.com offers a two-year care plan for the phone for an additional $34.