I think your price is well short. Highwall actions, even this plain trigger varient just demand a premium these days. I do not care for highwall varmint rifles, and wish they had all been left as they were originally, so I view this only as an action which would run in the $1k range or better - for just the action. If there is any value to 218 barrels and the wood, then the whole gun is going to be well over your estimate.
Just my opinion.
Brent
PS. one possible plus is there may be enough wood left in that stock to extract a reasonable rebuild from it.