We currently do not have any iPhone 4's available on sprint.com.
The iPhone 4S 16GB is $99.99, 64GB $299.99
The iPhone 4S 16GB preowned is $49.99, 32GB preowned $149.99 and the 64GB preowned is $249.99.
These prices are if your husband is eligible for an upgrade.
I hope this helps.
I am trying to upgrade my husbands phone for Christmas, I just want to get him the Iphone 4 or 4s depending on the price but the site wont let me checking upgrade pricing, please help?