My holo sight is 12 yrs old. I paid $450. at the time. The older models at the time were much bigger and heavier. And they were letting them go for $225. just to get them off the shelf. The newer version that I got just came out at the time.
Mine has been mounted on a Ruger 44 mag carbine since day one. It has had several hundred rds through it with absolutely no issues with the holo sight thus far. It has always held it's settings, not ate batteries, or chucked them in my face when firing the gun.
If the sight is in good shape and working order 250 would sound reasonable to me. I have no idea what a new one under the new brand name is worth.
Hope this helps somewhat.