These kits dont have to be used solo either. YOu can buy pads to attach to certain areas of you and your partner. But yea the kits are pricy but Ive considered looking into one as well. Something different. But to comment on the video... HOT!! Very nice Ottawa. :-)
to hbgbxrbrf: depending on what kind of e-stim equipment you want, premium e-stim power unit likes Erostek ET312 (erostek.com) can cost $500 or more, plus electrodes cost $39-$200 each. Of course there are some affordable DIY stuff you can make yourself. Check up PES (peselectro.com), Sextek (sextek.com), HappyStim (happystiim-usa.com), folsom-electric.com, electrastim.com, extremerestraints.com, xtremeelectrosex.com.
to 13snicket13 s question: e-stim is using low frequency electrical current pulses pass through one s genitals to stimulate nerve endings to enhance arousal and heighten/intensify sensation.