A short cleanse is a great way to jump start weight loss. I would suggest not doing something as extreme as Master Cleanse without supplemental support from someone like a Naturopathic doctor. Since I know you mentioned wanting something inexpensive I would suggest an anti-inflammatory diet. If you could do 5-7 days instead of three then it would make a big difference. Essentially you remove alcohol, caffeine, dairy, and gluten from your diet. In addition, and to facilitate detox, you take regular epsom salt baths, exercise to sweat, castor oil packs, and drink half your weight in ounces of water per day. This is far less extreme than most diets and yet most people lose weight and feel like a new person (I speak from experience.) The problem with extreme cleanses is that they do purge toxins out of organs but without support for those organs the toxins go into the bloodstream and then back into your organs again, leaving you back where you started. The Naturopathic DR I see did a talk on this type of detox which you can listen to (for free!) Here's the link:
http://drmarierodriguez.com/2011/06/13/nutritional-detox-teleconference/
I hope this helps. Best of luck in taking care of yourself!
Christy Przystawik
Holistic Helath Coach. Wife. Mother. Motivator.
www.coachchristymarie.com
@ChristyMarieHHC