I wonder if those prices will also increase. If visas outside the country are the same price as New Zealand, it would make sense to increase the extension prices inside the country at the same time.
These are the new prices beginning 19 March 2024. Therefore, if you went to Vientiane on or after that date it could well be the same price as New Zealand, give or take, because they generally standardise prices around the world.
I emailed the embassy about it a day ago and got no reply. It is still up, so one has to assume the fees will be rising on 19 March 2024, not only in New Zealand, but around the world, unless it is a mistake as you say.
Has anyone else noticed that Visa fees are about to increase by notice at their local Embassy?
These are the new fees for New Zealand e.g. $300 for a 60-day tourist visa and $NZD 800 for a single entry Non-B etc.
https://wellington.thaiembassy.org/th/content/the-royal-thai-embassy-wellington-would-like-to-an?cate=5d75e39215e39c06b8005479
https://image.mfa.go.th/mfa/0/Ty8J7f4hKr/Announcements/Consular_Service_fees.pdf