Hiya,
this may be a long shot... but I know some people are able to get lipotrim ( which is based on the same prinicple as lighterlife and cambridge, but with a lot less flavours) from their Doctor/ Dietician. Not sure how much you have to pay for it, ie if it's just the prescription costs. I beleive You may also be able to get cambridge that way too - again not sure of the costs - may be worth chatting to your doctor about it? Probably depends on which area you live in. I remember watching on discovery health ages ago, on desperate Dieters, one of the dieters attended a hospital clinic and was on camberidge...
Hope you get things sorted soon