I'm part of another group buy for these Neptunes
https://bitcointalk.org/index.php?topic=347845.180, and they switched to having the refund from KNC in BTC instead of $.
The refund came back in the equivalent $ to BTC exchange rate on the day of the refund, not the amount of BTC that was paid originally. If this is indeed the case for everyone, I'm thinking we should just get a BTC refund then there is no need for Waldhoover to purchase any BTC himself he can just send the extra BTC to everyone.
Can anyone else confirm this is the case with BTC refunds?