Hi!
Thanks for reaching out! I appreciate the opportunity to serve you.
While I no longer fulfill individual retail books, you can still get MoH with your discount/grant. If you contact Linda Hobar through her website at www.themysteryofhhistory.com you can let her know you have an HSLDA grant and she'll provide a discount. You can also use funds for all core curriculum items at ChristianBook.com and Rainbow Resource Center. They don't offer an additional discount, but they usually have a sale or discount running, and HSLDA permits using the grant funds anywhere, not just the vendors list they provided you. (I have confirmed this with HSLDA.)
Additionally since I still love HSLDA and want to support this program but no longer ship individual books, instead what I do is provide a free SSC package if you buy any MoH volumes. If you purchase from www.themysteryofhistory.com they have a download code for you to redeem that item, anywhere else you'll just need to email your receipt or a screenshot of your order confirmation to me directly (jb@brightideaspress.com) and I will send you a code for the SSC for each volume you've purchased.
Thank you and have a great day.