Australian wine never came down in price. I come from the Barossa Valley and enjoy a good red.
There are a few bottom end wines for 399bht.
Sone of them are ok and won't break the bank
This was article last year
In January 2024, Thailand significantly reduced wine import taxes, including exemptions for Australian wine under the Thailand-Australia Free Trade Agreement (TAFTA). This means that Australian wine is now largely free of import tariffs when entering Thailand. Additionally, the excise tax on wine was reduced to 5%, and there's a consumption tax for wines priced above 1,000 baht.