FWIW, I totally agree with many of the points that Mark and Bob just posted.
Additionally, I believe that the value of you attending The National is for you the artist to "cast a larger net" which will reach collectors that still do not know about your incredible work.
I must admit that I commissioned a painting with you before I ever saw your work in person. As a person that really appreciates painting per se (I love many different styles), I believe that this opportunity would be huge, plus I really like you as a person having worked with you now.
I hope to see you in Cleveland this year, although my time there is going to be very brief due to other obligations.
Keep up the incredible work.
All my best,
Scott