I was thinking of recording some G70 videos for fun , but wonder how to do it at good quality - my camcorder records video OK but the microphone is useless

So was thinking of overdubbing using some seperate recording device (G70 does not have built in mp3 recorder)

With mp3 recorders at under £20 i though that would be a good option , but all of them that i found do not have line-in they all just have a useless microphone , does anyone know of a mp3 recorder with line-in available in UK pref for under £20

Thanks

Tony