You have invalid items in the store's itemfile.
Please remove these items and reupload the itemfile.
Your item file may be using special characters in the price field, such as $, and these need to be removed from you item file to work properly with the cart.
After changing your item price field to the corrected format, your recap forms will show the currect currency and will get rid of the $0.00 result.
Be Sure to have all your prices in this format.
19.99 or 175.00. No Dollar signs or commas.
Download your item file, remove the $ sign.Redo your itemfile with these changes then upload them again.