Official goldback.com exchange rate for 07/24/2023 remains $4.04 as there was no update since 07/21/2023.
After a review of online sellers' prices, the best price for an in-stock 1 Goldback is $3.69 over at Defy The Grid
The best price for an in-stock 50 goldback is $178.38 over
at APMEX
https://apmex.com/product/255963/50-wyoming-goldback-aurum-gold-foil-note-24k