If you will direct your attention to the right, you will see that the somewhat needy 'Buy Supernatural Tales' link directs you to issues 17-23. So, it's available to buy online.
I'm currently engaged in a life-or-death struggle with a big box of magazines. I've started posting out contributors' copies, then it will be the overseas subscribers' turn, and finally UK readers will receive their copies in at most a couple of weeks at most. (Though I suppose Easter bank holidays may disrupt the post a bit, so please make allowances.)
Anyway, I hope you enjoy the excellent stories in this issue.