Oh Joy Sex Toy recently launched a Kickstarter campaign for Volume 4 of the strip and it was funded in a day! (Yes, we backed it.) You can read the webcomic for free, but I like collecting the volumes for the extras and because I forget to go back to the site every week for a new strip and sometimes miss them.
If you'd like print or PDF versions of Vol. 4 and the books so far, you can get them via the Kickstarter campaign here. The KS runs through May 31st, 2017. You can also order Volumes 1-3 from just about any comic or bookshop.
To celebrate the Kickstarter for Volume 4 of Oh Joy Sex Toy, here's a link to a guest review I did over at Smart Bitches, Trashy Books!