Was browsing Playasia a bit earlier today and noticed they had reduced the prices of some of the older issues of Arcadia (most likely trying to get rid of the stock).
Prices vary between the issues but they range from about £2.15 up to £7.40.
What is worth noting about the price drop is although the news sections of these magazines are of course old now, they do contain sections with guides as well as a few that came with DVDs or music CDs.
If you only buy one i recommend the May 2010 issue, which came with a DVD containing the Neo Geo Anniversary 77 clips, highlights from the Arcadia Cup (KOF02UM), and a tournament featuring KOF: Sky Stage.
You can check out the write up i did of that issue here, also if you use the search bar on the right hand side of my blog to search 'Arcadia magazine' you can find write ups i did (from April 2010 - Jan 2011) on some of the other older issues.