What are the terms of use for UE4?

Hi! My company is building a simple VR app for HTC Vive using Unreal4 engine. 

Can you please clarify what is the terms of use of your Engine and if we should pay you something before/after the app is published? 

We’ll like to list it for $0.99 cents. Thank you in advance!

i recommend you read the eula on the link, but in terms of money this should be what you’re looking for
"UE4 is free to use, with a 5% royalty on gross product revenue after the first $3,000 per game per calendar quarter from commercial products. Read the EULA FAQ for more details. Contact us if you require custom terms. "

Hi,

I’ve been trying to contact you for a custom license, but there has been no response.

Please get in touch with me on the email ID on my profile. I’ve tried twice to get in touch about this, but to no avail.

Thanks.

Notice that “contact us if you require custom terms” is quoted in my answer above, you should contact epic, i’m not from epic, i was just quoting the eula.

Haha. My apologies. Its easy to mistake “answers” for ‘support’.