I have a significant pretense on the internet. While I have 4 domains that are publicized, I also have other domains that are redirects to these four publicized domains. The reasons is for brand (or name) identity. The domains vary in price. My .tel domains are $11/year whereas my .to domain is $50/year. There is a big difference between the two prices. I sat down and made an estimate of the charges, and came up with less than $15,000 for my domains for 50 years. This will mean I will be 100 when I have to worry about my domain registrar fees again.
Also, with exception of the .tel domains – all of my domains will need to be hosted. This will come out of the money from the investment account. I will typically try to cover my bills for 1 year, and the same will apply for my hosting charges.