Well, I can't afford to play in modern, I'll be cooked by those max level cards. However I have like 17 voucher laying around and I think I might just buy an additional 23 voucher and see if the SPS earnings will improve. Additionally you're right about the market, it has taken a serious beating and, I guess it's what it is.
Congratulations on your War Pegasus. I have it at level 5 or so, and it's one good card.