Handsomedan:The local junk ($2ish) shop that we have frequented for many years...
Youngest son bought a USB desk fan from them for $10. It wouldn't hold a charge for more than a few seconds.
I took it back the next day and asked for remedy (politely asked for refund or replacement). He said he didn't have any of those left. I asked for my money back.
He refused on the grounds that I didn't have the original packaging. I stated that it was pretty unusual for a kid to keep packaging from a cheap thing they bought and it wasn't a requirement under any law or regulation that I was aware of. Please refund my money.
He again refused, stating that KMart or The Warehouse would require the original packaging and that I was having a laugh. But then he offered a great deal on a more expensive (but basically the same) item. I said, no thanks, I am not paying extra for something that I don't want. Please give me a refund.
Again I was refused said refund, then it got quite heated (he started shouting, I started speaking loudly enough that customers started walking out) and he essentially told me never to come back to his store again. Off to the local Facebook page I trotted and gave my 2c worth. It would appear he's developed a reputation for this kind of thing lately. CGA doesn't apply to him and anyone that doesn't like the way he runs his business is welcome to go elsewhere, apparently.
Shame - used to be a good little shop run by locals who seemed to have just the right junk at the right price.
Went to Warehouse, bought a far better USB desk fan for $5.00.
Sounds like a successful way to run your business. Into the ground!

