You may be opening the Price List report in TallyPrime to check the prices of items in which the items are generally listed in alphabetical order. However, it may happen that some items are not in the alphabetical order.
If an item has Bill of Materials (BOM), then items are listed as first components and then finished goods and not in alphabetical order.
The component items in BOM get listed prior to the finished good. For instance, if the BOM or components are Limestone and Clay while the finished good is Cement, then the Items in the Price List report would be sorted as Clay, Limestone, and then Cement, which is the finished product.
It is important to know that if there is an item without BOM and with the initial alphabet that falls between that of components, then it will be listed between those items.