crazy Probus prices

[Victor]

I was on acsearch trying to figure out a price for a Probus coin and was surprised by how ridiculous the prices have been for similar types in the past.

Probus
A.D. 279
Ӕ Antoninianus
22x24mm    3.8gm
IMP PRO-BVS AVG; Radiate and cuirassed bust right.
ROMAE AETER; Roma seated in temple holding Victory and sceptre.
In ex. R crescent Γ
RIC Vii Rome 185

I was thinking about $125; but after seeing these prices I figure at least $1200. 

[Victor]

derp...the expensive Probus coins are actually not antoninianii but double antoninianii...the weights are circa 8.5g