The Wordsmith's Forge

 These look good.

I hadn't even heard of most of these, and I'm a fan of rare apples too.

My favorite is a dessert apple called Ginger Gold, sweet with a clear ginger note, that's only available for a couple weeks in mid-August.

One of the things on my list of  Things to Do with Entirely Too Much Money is buy orchard space to collect apple trees, one for southern and one for northern varieties.

 ... hint at resilience.

 ... with suggested shelf lives.

If you buy from suppliers for long-term storage, you can get much longer timeframes.