This package is very good for anyone that wants a game of there choice, rather than being forced to opt for one of the set packages.
By purchasing this pack, Gamestation believe you're saving around £130.00, so despite not mentioning if it's the premium pack, it does state the consoles normal price is £279.99 in your basket, which is the retail price of the premium pack.
Also when choosing the game of your choice, i recommend picking up one of the collectors editions, as they have additional bonuses and are worth more (retaining it's longterm value) but you may choose from literally any game that is available.
Please remember to look at my other and other members xbox 360 posts, as there's some very good deals already mentioned for games, so you might want to buy games like pro evo 6, splinter cell, gears of war etc seperately to maximise your saving.
I also think quidco offer 3% cashback for console purchases, which means you'll receive a further £9 return, meaning you're buying all the following for £291.00:
xbox 360 premium pack (includes harddrive, headset, wireless controller etc)
additional wireless controller
Battery recharge pack
Xbox live arcade unplugged.
So in my opinion, this is probably the best xbox 360 deal i've seen.