Advice on buying Nikon D60 (Flash broken/needed)?

I found this 2nd hand Nikod60 for 190£, but the store manager told me that the flash isn't working. Is flash really essential or can I cope without it? (can you do night photography without flash?)

I found another one for 230£(perfect working order) and a nikon d3100(+video) for 280£.
All those include an 18-55. Advice please?

Added (1). What I 'm looking for is a cheap dslr to practise. A 2nd hand d60 is prob my best choice, since I do print too and don't want a body with less than 10MP.

The flash is fairly important, so look up how much it would cost to be fixed.

If I were you I would just look up all the features of the different cameras and make a decision based on the prices, features (and weather you need the features or not) and the condition of the cameras