Cheapest domain extensions for your sandbox or non production projects
Here are some of the cheapest domain extensions if you are looking for a sandbox / draft project that you want to mostly use for testing or staging, non prod environment set up.
Not to overwhelm with information, im just listing down couple of trusted and popular domain name registrars here Namecheap and Onlydomains.
When you replicate your production website or apps to a sandbox domain, make sure you add robots.txt file with disallow tag to make sure the sandbox domains are not indexed by Google by any chance.
Namecheap
.online $0.98
.store $0.98
.xyz $2.00
Onlydomains:
.xyz $1.99
.online $2.99
.store $3.99