power cord for electrostatic speaker

Hi folks, I would like to know if you have some suggestions/recommendations regarding the use of special after market power cords for electrostatic speakers (Sound Labs). The power consumption of such speakers is extremely low, so I don't think power cords would have audible (if there is any) impact. What is your opinion? Isn't it a bit ridiculous to spend 2 x US$700 worth of power cords only for electrostatic speakers?

Chris