Looking at the most recent item put up for raffle - a T2 Artist's Easel - 100k silvers is extremely reasonable. Especially because I know that there are people entering the raffle looking to flip it for a bare minimum of 50m silvers (or equivalent, and I do mean bare minimum).
If it were account bound, I might call 100k silvers a little steep. Maybe.
I'm personally thankful that the raffle is in silvers and not bloodscrip. But maybe that's because the raffle system can only take payment by silvers and not alt currency.
Which, by the way, would be 100bs at the exchange rate of 1m silver to 1k bs. That's 1/3 the reward for a successful Arena run.
@fickle locust - I'll happily pay you 100k silver in exchange for 100 bs so you could enter this raffle. Or just to have the silvers. DM me or look for Traiva in game.