One of the hot comics on the secondary market right now is Back to the Future #1 Cover A. Selling regularly in excess of £10 this is a book that doesn't seem to be slowing down - so if you see one kicking round at cover - grab it!
A much rarer book to get is that of the Diamond UK retail sketch variant. This has seen prices hit online of £50-£75.
As of time of writing Forbidden Planet have copies of this for £25!!
This will be a book people will want to own 'in the future' so grab a copy now if you get the chance!
The link for this is below -
Back to the Future #1 UK Retail Sketch Variant