you dont want to cheap out on the charger or battery's or the battery's could explode to be honest if you cheap out then you will have a few problems get a good charger and lipos are brilliant i recommend this one it is the one i use
The second one down comes with the 230V power pack. I've got this one for my Lipos and it works fine. Charges most of them within a couple of hours max, but basically when the green light goes out the battery is charged.
Get your Lipos from Component Shop too - most of them are around the £12 mark! It's not like the bad old days when airsoft retailers would charge £40 for a nimh battery