Firstly, my condolences.
Any scopes on the rifles?
There have been a couple of German Weatherby's for sale on the EE here for a few months now, asking price $1400. However, as the description is very basic and there are no pictures, it's hard to say what condition they're in.
I would suggest to not sell them to a gun store/gunsmith/gun dealer, as most will give you a low offer. That's nothing against them in general, but they have to make a profit and will generally sell them at a reasonable price as they don't want to hang onto them forever, hence a low offer to you.
If you don't go the Equipment Exchange route on this website, maybe try a bigger dealer sale under consignment. You can set the price and they take a relatively low commission. If they don't sell within a few weeks, you know you've priced them a bit high perhaps. Try lowering the price by $100 or so.
You can also search this website and the US sites like gunbroker.com, gunsamerica.com,etc. While their prices are perhaps a touch high at times, it can give you a ballpark figure.
Maybe someone will see this thread and make you a fair offer, you never know. Good luck in your sale.