A FlyerTalk Posting Legend
Join Date: Jul 2002
Location: MCI
Programs: AA Gold 1MM, AS MVP, UA Silver, WN A-List, Marriott LT Titanium, HH Diamond
Posts: 53,006
I was assuming the OP would pay off the $25k immediately. The cost is dependent on how long he'd otherwise actually spend the $25k in a normal world - he's giving up liquidity and possible investment income on some amount of money there.
The other option - leaving it on the card and incurring interest charges - is so brutal that I'd say it's not worth it. US Silver status is not worth a big cash outlay in credit card interest charges of 18% or whatever godawful rate that card has.