Walmart offers the Bio Bidet Duo Hot/Cold Bidet Attachment, model no. BB-270, for $42.49. Opt for in-store pickup to dodge the $4.97 shipping charge. That's $3 under our April mention and the lowest price we've seen. (It's also the best deal now by $37.) This non-electrical bidet doesn't require any bathroom modifications and features pressure and temperature control dials, installation hardware, and self-cleaning nozzle.