I'd agree, if you'd like to shop in person, head across the border.

If you are not so keen on "shopping" there are some online shops from UK which ship to Switzerland (I've not tried any myself as yet), maybe (hopefully) good quality for the price.

Meanwhile, my m-i-l has been buying from Bon Prix for quite some time and I have ordered a few things from them myself. I won't say it is top quality but it also isn't horrible - plenty good for home and about doing day-to-day things, I'm less confident they'd have anything on offer that you'd want to wear to a job interview.