IF you go to Gun Broker Advanced Search and look at the "Completed" auctions and sort for auctions that had bids, you can get a good idea of the price that rifles are actually selling for, as well as what buyers have been willing to bid, over the past couple months. There is a LH .375 Safari Express on GB that has cycling around for several months at $2800 without any takers.

Good luck with your sale if you choose to sell...