The A3 GXe7700N also has very advanced automatic in-built maintenance routines which use less ink keeping the printer trouble free and ready to use. These two factors combined means a typical image printed with the GXe3300N A4 printer can be 65% more expensive than if it was printed with the A3 GXe7700N. So, even if you only want to print A4 sized images, for lower running costs we would always recommend the A3 GXe7700N.