Official Goldback.com exchange rate for 10/23/2023 is $4.10, down 14 cents.
Best prices:
1 GB:
3.76 - check
https://www.asayo.com/search.html?q=goldbacks
3.82 - credit card
https://finestknown.com/goldbacks-for-sale/
3.90 - bitcoin
50GB:
186. 65
https://providentmetals.com/50-wyoming-goldback-gold-note.html