About stamp fee

Hi there,

I found something confusing in the FAQs in this website. FQAs 8. is said that i only need to pay 25USD for single entry in 1 moth but 15. is said that i need to pay 45USD.

8. What is Vietnam visa stamping fee?
- Cash is recommended to prepare before you arrive at any Vietnamese airport. It’s about :
* $25 USD for single entry visa, from 1 to 3 months single visa

BUT in the next one here, it is said that we need to prepare 45USD for it 1month single entry.

15. Where do I get my Vietnam Visa Stamped on arrival at airport?
- At the arrival hall inside the airports, there is a landing visa counter, in front of the check in point counter, You have to prepare some documents to get visa stamp: 2 photos 4x6 cm, immigration form ( you can download here ) and some cash in USD. ( 1 month, 3 months single : 45 USD, 1 month multiple is 65 USD, 3 months to less than 6 months is 95 USD and 6 months is 135 USD).


I am just wondering if i am applying for single entry in 1 month, do i need to prepare 25USD or 45USD, thank you so much.