Walmart offers the Hangman Products No-Stud TV Hanger for 26" to 55" HDTVs for $20.85. Opt for in-store pickup to cut that to $18.03. (Amazon has it for cents more with free shipping for Prime members.) That's $22 off and the best price we could find. It holds up to 80 lbs. and doesn't require any studs, anchors, or screws.
Note: Walmart indicates this mount holds TVs up to 48", but the manufacturer website specifies 55".
If you aren't using any of these three methods for significantly saving on laundry detergent, you are washing money down the drain.