How much are casascius 0.5 bitcoins going for now?

[RAVENCROW]

0.5 Brass ungraded

[TheNewAnon135246]

It's hard to tell. It all depends on the grade or quality of the coin.

[AT101ET]

Ungraded can go for anywhere between 0.8-0.9 if you're lucky.
The graded ones MS-66 and above all sell for 1 BTC +.

[Pistachio]

I wouldn't sell one for less than 0.85BTC ungraded or less than 1BTC graded. Otherwise, just keep it or get it graded before you sell.

[TookDk]

You should properly clarify which of the 0.5 you need a price estimate for, there are huge differences:
Casascius 0.5 BTC silver Series-2
Casascius 0.5 BTC silver Series-3
Casascius 0.5 BTC Brass