inna,
It is remarkable that many don't understand that cables are components, they are equally important.
Everyone understands cables are a component. You don't get sound without them, and they have to be matched at least in the most basic sense to the situation in which they will be used (e.g. right length/capacitance, etc).
The question is, how much does one need to spend in order to pass along a signal with high fidelity? The answer seems to be: not nearly as much as audiophile lore suggests.
Spending $10 on cables would get anyone nowhere, unless you steal these cables and $10 is your taxi bill.
What then is the lower limit you suggest, and on what grounds?
My speaker cables are Belden, put together by Blue Jeans cable.
If you buy two 6 foot lengths it costs $14.50.
It seems to me $14 bucks for speaker cable is close enough to your 10 bucks that "would get you nowhere" claim. And yet my system sounds incredibly good - as good and often better than plenty of the systems with audiophile-approved-cabling I've listened to. So low cost cable certainly "got me somewhere" quite impressive. (BTW, the appraisal of my system isn't simply my own, I've had many audiophiles listen, including friends who review big priced audio gear, who think it sounds fantastic).
So, I'm afraid your claim doesn't get very far in my experience.