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. 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$ 40 (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
Trompovsky + Dutch – US$ 25 (instead of US$ 40) or Sicilian + Caro-Kann – US$ 30 (instead of US$ 50)
1.d4 d5 repertoire (for Black side – ALL openings after 1.d4 d5) – US$ 30 (instead of US$ 50)
Middlegame
50 examples on Ruy Lopez of the 20th century (most interesting and useful games) – US$ 15 (instead of US$ 25) or 50 examples on The a- or h-pawn plays against the Knight on b- or g-files – US$ 15 (instead of US$ 25)
Endgame
50 examples on Opposite color Bishops with Queens (not an attack) – US$ 15 (instead of US$ 25) or 50 examples on Knight better than Bishop – US$ 15 (instead of US$ 25)
If you have any questions about the material, send an e-mail to yelena@yelenadembo.com.