In case you didn't know your Premium membership includes 25 siterubix extension websites, and 25 websites as you'd like to name them (provided they are available), BUT the domains are NOT included in your monthly, nor annual costs. Good to know upfront.
So if you're budgeting business costs, and wondering what you're getting yourself into--
1) First month premium $19, each month thereafter is $47 per month (at time of this writing)
2) Domain pages on Wealthy Affiliate ("WA"), and anywhere else, are EXTRA. Costs vary depending on where you purchase the domain name. At the time of this writing, the domain I wanted was $13.99 through WA. Note that you can move your domain name onto WA for free.
Hope this helps others. The folks here at Wealthy Affiliate are a great bunch so stick around