What do groceries, GPS trackers, and prescription drug copayments have in common? They are some of the myriad items caregivers may end up paying for to help out an ailing parent or other family member. And these are just the incidentals. Three out of four caregivers have made changes to their jobs as a result of their caregiving responsibilities, whether going to flex time, working part-time, quitting altogether, or retiring early, according to a Transamerica Institute survey. To ease the financial toll, some caregivers dip into retirement savings or stop their 401(k) contributions. Not surprisingly, caregiving places the most strain on low-income families. People choose to be caregivers because they feel it’s critically important to help a loved one, said…