The current situation, it seems unlikely to collect at the original price, there are a few suggestions:
1. Give him a discount on the exchange rate, which is actually the same as giving him a price discount, so that he has the feeling of taking advantage of the situation, but also to see the sincerity of your sincerity.
2. Can you accept to let them pay 50% first and then pay the rest of the purchase price after the goods arrive. This is definitely risky, and you need to judge whether this customer is reliable.
3. Can the goods be sold to other countries, other customers? Convince this customer to sell to other customers at the same time.