Here in NZ a genuine BSA Hunter in 222, in that condition would fetch about $1500! The scope doesnt add to it at all, but if it was an older Kahles, or a Pecar 4x81 Light, then you would definitely have a nice example of NZ hunting history. These rifles were the favourite of many deer cullers and theres been literally hundreds of thousands red deer shot with these rifles by our professional cullers in the 50's, 60's and 70's. These models of BSA - the Hunter, Viscount, Royal and Imperial were years ahead of their time, integral dovetails, CRF, lightweight, adjustable trigger. If it was here in NZ I'd offer you the $1500 in a heartbeat.
And parts are available if you know the right person, or where to look. Not that you would need any for a rifle in that condition.