Hello!
After getting permission from @AnthonySmith I am posting this here.

I have a Hostbill Enterprise billing software lifetime license, which is 5 years old.

I have not used it for more than 3 years.

** Note: Hostbill provides 20 free support tickets with this license. In this 5/6 years, I have only used 2. So there are 18 free tickets still left to use.**

So now I think I should transfer it to another person or company who actually needs it.

The original license cost
Hostbill Enterprise = $999
Asking Price = $750 (A little bit negotiable)

Official Pricing: https://hostbillapp.com/pricing/

The License has everything of Enterprise plan including IPAM

Note: By default, Hostbill doesn't allow license transfer randomly.

But I opened a ticket and asked Hostbill about the transfer.
Answer: Yes, they allow license transfer if the whole company or it's asset sale to another entity.

Important:
So in this case, I will treat it as an asset and will issue a sale agreement to the buyer so that he/she will never have any issue in the future.

The license has not been in use for more than 3 years, so I don't think it will cause any issues.

Payment Methods I accept
1. PayPal (Friends & Family)
2. Bitcoin/BTC

Interested persons, please reply here and send me PM as well.
I may not be available all the time, so when I am back online, I will reply to each of them one by one.

If no one has any offer then I will bump this thread for a while (Not spamming every day)
Then I will let this thread to die slowly