If you haven't noticed, there is a PSA 8 Gilligan's Island offered on eBay for a whopping $1999, which is a really high price but I think this is the only Gilligan's Island pack offered on eBay so far in 2019. A PSA 6 pack sold in August 2018 for $911 and a PSA 6 sold for $1060 in June 2018.
https://www.ebay.com/itm/1965-Gilligans-Island-N-S-Wax-Pack-5-Cent-Authentic-PSA-8/143458438027