There are Grandmaster Sarkhan Guliyev's group lectures on the endgame.
There are 8 lectures.
You can choose topics and quantity.

Price is $19
Sarkhan Guliyev
International grandmaster since 1995
FIDE coach since 2011
Three-time champion of Azerbaijan, the winner of the Dubai Open 2007, Izmir 2002 Open winner, coach of Turkey for 3 years (1.5 years for men and women, 1.5 years juniors), 7 years has coached Iran's national team, coach of the UAE for 4 years, 6 months, coached the women's team of Azerbaijan. He wrote books: "From candidate to grandmaster", "Textbook of chess endings", "Idea in a chess game", "Selected games of V. Kramnik", "Selected games of V. Topalov".
What you need for classes
• Computer or tablet with Internet access
• Skype
• Notebook