Dear Esther, herein Brazil we are producing some experiences about it. I don't know if there are exactly experiences that you need, but I would like to share with you some of this productions:

Udsen FW, Hejlesen O, Ehlers LH. A systematic review of the cost and cost-effectiveness of telehealth for patients suffering from chronic obstructive pulmonary disease. Journal of telemedicine and telecare. 2014;20(4):212-220.

Maybe the Teleheath Core, from Rio Grande do Sul-BRAZIL, can help you in this theme. 

Hoping have been useful in some way, my best regards!

Adélia

http://programa.telessaudebrasil.org.br/relatos/o-impacto-economico-da-atividade-de-telessaude-na-atencao-primaria-em-minas-gerais

http://www.scielo.br/pdf/abc/v97n4/aop7111.pdf

http://telessaude.bvs.br/tiki-download_file.php?fileId=2433

http://www.medetel.eu/download/2010/parallel_sessions/presentation/day2/Developing_a_Low_Cost.pdf

http://plataformatelessaude.ufrgs.br/accounts/login/?next=/

http://www.ufrgs.br/telessauders

You may look at Russian TMAS-stats: http://www.telemed-russia.com/#!digest/c1eom [in Russian]

Or may be: Journal article: https://www.researchgate.net/publication/287207799_Medevac_Operations_in_Russian_SAR_Region_rus

http://www.telemed-russia.com/#!digest/c1eom

Article Medevac Operations in Russian SAR Region [rus]