Where to get Pokemon cards valued/appraised?
I have a vintage Pokemon card collection that I'm looking to get insured. My homeowners insurance wants some kind of valuation from a card shop for the approximate value before adding them to my policy, which sounds totally reasonable. But I think I've called around to every trading card store in HRM and nobody will do that - they all say they have no problem valuing them, but nobody will give me a written "we would buy your collection at X% for Y$" - they'll only give me documentation if I actually sell, which I don't want to do. AMG used to offer a service for $3/card to evaluate them, but they no longer do.
I'm absolutely willing to pay for this service - does anyone have tips on where I could get a written offer from a card store? The collection I'm looking to insure is about 700-1000 cards - and I've already entered them all into the Collectr app.