Here's some non-LIDL ones to give you an idea:
M&S Cafe Revive, Apple Turnover, each 21
Kentucky Fried Chicken, Apple Turnover, per serving 12½
Asda, Chosen by You Bramley Apple Turnover, twin pack, chilled, 86g each 13½
Tesco, Fresh Cream Bramley Apple Turnover, individual, chilled, 88g each 15½
Marks & Spencer, Bramley Apple Turnover, in store bakery, each 21
Sainsbury's, Dutch Apple Turnovers, 6 pack, 33g each 7
Co-op, Fresh Cream & Apple Turnovers, twin pack, chilled, 84g each 14
Tesco, Bramley Apple Turnovers with Fresh Cream, twin pack, chilled, 88g each 15½