I work mainly in Indian ink and acrylic, and sometimes in oil or watercolour. Everything is specified for each work for sale. I bring great care to each of my drawings, and to each of my works. My acrylic drawings are spray varnished, in order to give them an additional cachet and to protect them.
Concerning the acquisition of one of my works, a certificate of authenticity is issued at the same time to the client. For the originals, the prices may seem expensive, however this represents a lot of work, and my rates are still low in relation to the work done and the prices charged in the industry.
I do not rule out increasing them over time, and depending on the actual work.
Thank you for your understanding!