Please help me find a free/low cost alcohol detox center in southeast PA?

I don't live in your area. Your 2 relatives may have to go their county human services for evaluation. The payment would be based on their income. They would be evaluated and offered treatment but it may be as an outpatient. They must have some motivation to stop drinking or even the best in-patient program will not help them. My local county offers a medication for those who are willing to quit drinking. It is taken every day and blocks the buzz or high one gets from alcohol. Try to see if you can get them in for evaluation as soon as possible.