As others have mentioned it really depends on a lot of factors.
Domain name ~$15/year Offshore server providers usually start around $30/server/month and quickly raise to thousands. Corporate application techs are usually $2k-200k/month depending on size. Anything that requires a GPU would be a custom build, dell power edge is a powerful machine you can lookup retail for. Storage Amazon s3 is $0.022 per GB/month. Keep in mind that providers usually have redundant copies in case of failure and often provide multiple releases codexes, resolutions and providing a lot more than people are requesting You often have to pay for networking as well which scales exponentially. Email accounts are usually $10/user/month any time would come from a senior developer ~120+k/year. But they are likely full stack developers so it might be closer to 200k in the US. You also need all the supporting licenses $0 in this case And servers to run development environments (double the costs above!!!) And infrastructure like Jenkins/monitoring which can scale high as well, but likely <$20k/year
Edit:The prices I quoted are for real businesses, and businesses usually negotiate rates and have discounts to close deals. This is the price for running a technical service, the fact you are disputing $5/year means you have no intent on having a real conversation about hosting fees. This is to ballpark a price for op. Stop being pedantic