The thing I don't get is how you can destroy a shoe in only 6 months? What kind of courts are you playing on?
I live in Iceland so for about 9 months a year I play indoors on a very soft cort. It's kinda like a carpet.
I bought my first pair of tennis shoes in 2009 and I can still play in them. I have five pairs now that I rotate but I don't think one of them is close to the usage I see in some of those pictures.