Official Goldback.com exchange rate for 10/16/2023 remains $4.05.

Best prices:

1 GB is 3.70 (check, also free SD GB with purchase of SD)

http://defythegrid.com/goldbacks/ref/6499/

1 GB is 3.75 (credit card)

https://finestknown.com/goldbacks-for-sale/

50GB is 183.94 at APMEX

https://www.apmex.com/product/218164/50-nevada-goldback-aurum-gold-foil-note-24k