As a sales person dressing real nice is part of our job especially when you are selling to the high networth individuals. They will first buy your brand before they buy your product. I don't look for expensive wears but i go for something that fits me perfectly and make me look good then buy a good shoe to compliment it.
My colleague if you see his suits you will think that they are worth maybe 80k each but no, dude knows how to get UK thrifts as low as 20k.
Haha I know what it feels like to work in Sales. The dressing is part of the job, that is why I said dressing is part of the package of people who work 9 to 5. I think when we dress for a business appointment, it's totally worth it. I think your colleague is a smart person. We can buy cheaper things while convincing people that they're way expensive.