i received a purse 5 years ago. last year i bought another from the same store. after 4 years, i bought with relative confidence. after one year with the new purse, there was a leeetle problem. color transfer. i brought the purse back, after a year, mind you, and they replaced it. decent service but some would say, and have said, that it shouldn't have happened in the first place. truthfully, it has given me pause. i will wait another 5(ish) years before considering another purse. this newer one will have to (re)earn my interest in the brand.
this wait and see approach, however, is not my typical m.o. it is easily enough practiced with something like a bag, which i regard as a staple, a standard, a regular, a recurring character, etc. but with other items, multiplication is the norm, and i don't wait a year to see if a pair of pants will be so indispensable as to warrant a second of the same. of course, that wouldn't be terribly practical anyway since it would be nearly (there are always exceptions) impossible to find the exact same pair of pants a year later even if i wanted to. but if i did have a pair that i loved, that brand would warrant priority investigation the following year, or whenever need arose for a replacement.
How long do you wait for a brand or store to earn your repeat business/loyalty?