My other side hustle was reselling items on eBay via garage sale flipping. This is where I made most of my side hustle money in college.
Most of my dollar store and garage sale purchases were smaller wins. For example, videos purchased for $1 would often resell for $8 to $10 on eBay.
Even with smartphones, having specialty areas will allow you to move quickly through garage sales and identify the more valuable items.
Finding great deals at garage sales is all about volume. You need to be able to move quickly from house to house.
Most anything decent at a garage sale will be gone before 10 am, if not earlier. There will be others looking to resell items, so it will be essential to beat them to it.
Many eBay vendors offer free shipping, so it is important to keep shipping and packaging costs minimum.