On the one hand, it's pretty anti-Mustachian to consider buying $1,000 shoes at $500, but I think the real anti-Mustachianism in this story is the market that wants to buy $1,000 bags but then refuses to buy the model once Paris Hilton 'devalues' the brand (per their example) and instead demands a new product at $1,000. While those people spending $500 on shoes surely aren't saving anything, they're still doing relatively well compared to those who need their accessories to be expensive and unique solely for the purpose of being expensive and unique.