I have built a few wordpress sites for clients who have reached out to me after seeing my work. I also didn't have a clue what to charge at first, not wanting to pass up the opportunity, I researched till I came up with something I was comfortable charging given my experience. Here's my average pricing structure, fluctuating according to the client. Most of my clients have been housewife type folks without a lot of capital to blow on getting online.
Since Im not a designer, I only charge $150 to set up a 5 page site.
However, I don't give them log in info to the wordpress since they don't ask for it (I take Powered by WP out of the footer

)
I charge them an ADDITIONAL
$18.00 an hour for updating content, adding banners, etc.
$45.00 per additional page
I try to resell graphic design services for logo creation etc.
Then try and sell them my social signals, packages vary in price from $10-$100..
Im losing some cash not reselling hosting (I just have them do this themselves, giving me access to their server) but have read a lot of complaints about it being a hassle so haven't even tried it honestly..
Just my personal pricing structure.
Good job getting something going.
Hope it helps.
GL on the come up