I have noticed that a lot of people like to purchase many examples or/and openings at once and get a discount, which I totally understand 
and usually agree with or even suggest myself :). The examples (middlegame, endgame) are usually well analysed and theoretical material is huge and is updated on a daily basis from various important and most recent books. If you have any questions while studying the material, let me know and I will help. It is possible to buy it using PayPal and sending payments to yelena@yelenadembo.com (please, indicate your e-mail address, so I know whom to send it to ). Material will be sent in pgn/cbv files directly to your e-mail address ASAP.
Books: my 1st chess book “The Very Unusual Book About Chess” + 2nd “Conversation with a Professional Trainer – Methods of Positional Play” – US$ 35 (instead of US$ 60) with postage and packaging included (I can also sign and dedicate if one wishes :)). Check out the books page here.
Openings
Buy the Russian Game (US$ 15) and get the Scotch for free (worth of US$ 15)!
Buy the Gruenfeld (US$ 20) and get the Nimzo-Indian for free (worth of US$ 20)!
1.e4 e5 repertoire (for the Black side – ALL openings after 1.e4 e5) – US$ 50 (instead of US$ 80)
Check out the free but old theoretical and middlegame samples here.
Middlegame
Buy 20 examples on Exchange sacrifice on f6 – US$ 5 (instead of US$ 10) or 20 examples on Sacrificing a pawn to a Queen for a file – US$ 5 (instead of US$ 10) and get 20 free examples on Removal of blockade worth of US$ 10!
Endgame
Buy 20 examples on Practical Rook endgames – US$ 5 (instead of US$ 10) or 20 examples on Knight better than Bishop – US$ 5 (instead of US$ 10) and get 20 free examples on Minor piece stronger than Rook worth of US$ 10!
If you have any questions about the material, send an e-mail to yelena@yelenadembo.com.