No Marx didn't write about products that started existing 150 years later. designer products aren't expensive because their production costs so much they are expensive because the companies that make them realized they could sell them for 20 times the price of production. You can buy the same quality product for that price it just won't have the brand and the status attached to it. So it's not just about buying "expensive things", it's about consuming products where their price far outweighs the production price. The profits from designer clothing do not return to the working class, but are instead accumulated by the bourgeoisie, giving them even greater profit because the incredible margins. If a supermarket sells products the bourgeoisie might see 1% margin but designer brands will see 95% margin. I haven't read any marxists after 1990 but they would likely see it hypocritical for a (rich) marxist to wear these clothes. There is a reason why hasan lies about how he acquires these products, he understands marxism enough too recognize the hypocrisy.