Shopping4 has just been put on the app store.

App Store URL:

App Store - Shopping4

Shopping4 organizes your shopping experience. Easily list the items you intend to purchase and Shopping4 calculates your totals including tax. Shopping4 features a button to do a web search for each item on your shopping list and an "over your budget" alert if you enter a budget amount. You also have the option of sharing your list by email and printing it.