use the price comparison websites like
www.toppreise.ch and
www.preissuchmaschine.de to work out how much your trip is worth doing.
Then click click click and wait for the delivery.
For what you're describing, travelling from Zurich to cross the border will be a false economy (but if you do it, try to get German VAT refund and declare your stuff for Swiss VAT).
Singen and Waldshut I think are the places you might want to go to.