City & Guilds NVQ 2357 Unit Guidance Notes

Hi
I am an experienced qualified college lecturer, tutor and currently working as an NVQ Assessor in Electrical Installations.
Would anyone be interested in purchasing NVQ Unit Guidance Notes to help them complete their
City & Guilds 2357 NVQ?
I already have my NVQ Unit Guidance Notes in place but l'm not sure if candidates would be interested in paying a fee for either all seven units or maybe individual units. Also how much would they be worth do you think? They are detailed guidance notes giving advice on what actual evidence would be most suitable for each learning outcome in each unit.
I would like your feedback and then l can decide whether to offer them or not.
Many thanks for your comments in advance, John.