If the shopping list already contains an item with an amount specified, and the two items are merge-able, and the new item also has an amount specified, then the two items are merged
If the shopping list already contains an item with an amount specified, and the two items are merge-able, and the new item also has an amount specified, then the two items are merged

FAU-Inf2/kwikshop-ios,FAU-Inf2/kwikshop-ios,FAU-Inf2/kwikshop-ios