Walmart offers the BioBidet Duo Hot/Cold Bidet Attachment, model no. BB-270, for $44.80. (Amazon charges the same, with free shipping for Prime members.) Choose in-store pickup to dodge the $4.97 shipping fee. That's the best deal we could find by $34. This non-electrical bidet doesn't require any bathroom modifications and features pressure and temperature control dials, installation hardware, and self-cleaning nozzle.