well,you could pay more for good quality...but I personally prefer to pay less,and find excellent quality items. And when I have to,I'll pay more for the quality

that said-
for clothes,-*Gap*-
everything I've ever bought from there,(usually clearance sales )has lasted for YEARS> literally years....I bought a school backpack 11 years ago when ds2 was born,to use as a diaper bag- 3 years for that purpose,then ds1 used it for his personal backpack for approx 6-7 years...then ds2 now uses it for his school/trips backpack-it is still in EXCELLENT shape! (he took it to Disney 2 weeks ago) every pair of socks,boxers,shirts I got from Gap lasted for many years(DH has some boxers from at least 12 years ago,I am NOT kidding!still in decent shape!)
Lands End clothing and snow boots wear thru multiple people in our house,then we pass them along to friends who can use them....since DH doesn't outgrow things,he still has his LE shirt I got him approx. 14 years ago,it is as good as new!(he never gets rid of things he likes

)
Gymboree stuff seemed to wear really well when my kids were small....,and close second to Gap is of course Old Navy,we have lots of those clothes for years in our house too....
IMHO- most designer 'labels' aren't worth the extra, but there are some really solid clothes out there......
I've had the same Kenmore washer and Dryer from Sears for 22 years...no repairs needed.....
my Mercury Villager van is 16 years old- with a little work on her, she is still a reliable car-
I do spend extra on Benjamin Moore paint for my walls, it has such a nice texture......and it goes on better than Home Depot paint,tho my DH disagrees....
my Smartwool socks are WELL worth the 9.00 a pair I paid for them (on clearance)