Rimowa is quite good in general with keeping the products available country by country. The problem you face today is currency fluctuations which they have no control over. Zurich for example, would be expensive for a German-made product.

I do not know the current pricing at Galeries Layfayette or Printemps. I would suggest you send an email sales enquiry to those stores. The problem we have encountered before in Germany with Kaufhof is having the right model and colour in stock when you arrive. LH Worldshops will take a luggage order and hold it for you for a reasonable period.

Regarding a hefty discount, in addition to VAT, I do not of that possibility. But it good to be optimistic when travelling these days.

Were I you with your interest, I would email DAS BAGS and negotiate directly with them. It is the same product afterall, and you receive what you want, and not second choice store item that was left in stock. In this manner, they could ship you exactly what you desire in colour and size, overnight if necessary, and you could enjoy travelling with your new Salsa item from your departure location onwards.