Yeh i got one last year off ebay, think it cost me €40 & about a tenner delivery, it recorded in 5 minute takes and you can put as big as 32gb sd card into it so would in theory recorded non stop for about 10hours before it starte dlooping over the old footage, would turn off 30 seconds after you tunr you car off and it had Night vision aswell! but I must off dropped it at some stage and it was constantly on night vision, it still recorded fine but the tree etc looked pink,

I'd say you could get them cheaper now