Sequential First Anniversary CGC pristine

Curious on value and who/where to sell. Just got back my submission. . I received all pristine 10 in a row for all 16 cards in the first anniversary set. This is the only sequential pristine set in the world. There is a sequential psa10 set on eBay for 10k. I see a sequential cgc set just sold for 2k with one of them not being pristine. What's a fair value for these? Any idea who would be interested in something like this?