Samsung LED Monitor - Thin vertical line

[mathan]

I have Samsung LED SA300 22" monitor. It is around 3 years old and out of warranty. For the past couple of weeks there is a very thin vertical red line to left of the monitor running from up to down. As of now it is not causing any problem and sometimes the vertical line disappears and would be back again after couple of hours. Is it time to change the monitor or can it be serviced for reasonable service charge? I did check with Samsung service and they told that they would change the circuit board and would cost around 6.5K (They just told me over phone when I told them the problem) I think I bought this monitor for around 11K around 3 years back.