You may or may not know this, but I own a very small game publishing company. How small? Well... so far we have produced exactly three items for sale, and all of those have been released in the past month.
To date, Goblyn Head has produced a supplement for D&D 5e, and adventure for 5e, and a generic map of a barrow mound that is free to download ("Pay What You Want"). All are available from DriveThruRPG here.
Come check it out! Zeebs (our mischievous but friendly goblyn mascot) will show you how to go. And if you do pick up something, please leave a review!