I checked prices in Tandy to see how much we’d saved by buying headphones from Aldi instead of a ‘normal’ retail outlet. The cheapest wireless phones in Tandy were $100. In Harvey Norman they were $250 and above.
I tried out the $50 ones I bought from the supermarket and they work fine. As far as I can tell I’d not be sufficiently better off in terms of audio reproduction buying the more expensive ones to warrant the additional costs involved.