Just booked two upgradable fares for April--both confirmed in C in new UA 900 lie-flats. One was with miles, and it was $1700 SFO-PRG, and the other was with an SWU, SFO-BER (TXL) for $1500. It may be on the high side for April, but maybe with this economy, UA hurts most of all and they need to charge these high fares, especially with alll that hedged fuel from last year. I am glad to hear that you think this is a reasonable fare. I looked in February, and the lowest economy fares I saw were $925 on UA.