“…The availability of GF foods, their value for money, and clear labelling are among the main factors affecting dietary compliance. The availability of GF products has dramatically grown over the past five years: GF products can be purchased in major supermarkets, health food stores and online shops [9]; however, they remain significantly more expensive than gluten-containing food products [10,11,12,13,14]. As a component of some grains, gluten is typically not listed separately in the product label, hence foods that contain gluten might be difficult to identify.…”