Official Goldback.com exchange rate for 08/10/2023 is $4.01, up one cent from yesterday.
After a review of online sellers' prices, the best price for an in-stock 1 Goldback is $3.65 over at Defy The Grid http://defythegrid.com
The best price for an in-stock 50 Goldback is $176.57 at APMEX
https://apmex.com/product/255963/50-wyoming-goldback-aurum-gold-foil-note-24k