Casio FX-CG50 Calcuso Calculator with Case : Amazon.co.uk: Stationery & Office Supplies
CASIO PRIZM FX-CG50 Color Graphing Calculator - Shop With Me Mama
Casio FX-CG50 3D Graph Catalogue Function Graphic Calculator - Etsy UK
Update: It really does go without saying, the FX-CG50 is a beast of a calculator. But my trusty FX-991EX is still good for a lot of things. They are both good calculators. :
Casio FX-CG50 Graphing Calculator - Collection only from Chatham | in Chatham, Kent | Gumtree