It's not that expensive considering inflation - the special mags when I was 15-17 slapped a £3-4 price on the front. Considering we're 10 years on, comes with a packed CD and is targeting a small market, it's not surprising to see a £6 figure. £5 probably would have been ideal however.
As I've said before, I still have my own personal collection of mags for retro nostalgia. Nothing beats the real thing, although it's nice to read recognised names from the past reliving the golden gaming era.
The internet also has some great sites and retro articles, although many have gone recently.