How do feel about free samples in ziploc bags?

Not every protein powder comes in individual samples.  It's up to the manufacturer whether they want to package it in these smaller bags, and most will not do it due to the increased cost factor.  Individual vendors often repackage samples for samples, using USDA food grade bags.  As long as the bag appeared to be new and I didn't buy it in a dark alley or in a foreign country, I'd assume it was good. Consistent color, no sign of bugs, etc. too are pluses in whether the item appears good. Dave