Okay: I am interested in upgrading my current Play:3 surrounds to Era300’s.

Price per Era300 €499, nice surprise: a set is €50 off to €948

Bummer: when I use my upgrade-program-voucher: the price reverts to €999 

Sure: I get it: the conditions say: ‘a voucher cannot be combined with other offers’ but it still does not make sense really that someone who bought 2 Play:300’s and upgrades to a set you lose the set-price.