The Ivy budget...  Who'll own up to their missus having a go at them from time to time?  I got well over my credit card limit during two or three visits to Russell Street, plus having them send stuff through the post: two slack jackets, desert boots, Sanders...  And now I'm skint, hence the charity shop dipping and more time spent tending the roses.  I set myself a modest limit whenever I head off anywhere and flinch if I think anyone is trying to overcharge me.  I also think: do I need another?  I got away with £40 last time in Nottingham: a Grenfell zippered jacket, a shirt and a paisley silk tie made in the 60s for Harrods.  Just liked the look of it. 
Fascinated by the notion of Harpo being willing to spend over £100 on an Orvis cardie.  My workhorse Pendleton, now in for repairs, was about £3.  I won't shell out much for dessies either. 
So what's your limit?  And how tolerant is your ball and chain?