There are many brands and many types of hearing aids machine are available in the market. The cheaper local assembled versions are available within Rs 10000 also but they do not have quality of sound and uniform amplifications at different audible ranges. That is why an audiogram is taken for the purpose of finding out at which frequencies the deterioration is more so that the haring aid can be designed in that fashion. I will advise you to go for a branded hearing aid only. Due to digital technologies there is much noise reduction in the modern hearing aids and it would be advisable to go for the digital one. Some of the good brands are Oticon, Resound, Widex, Phonak, Unitron, Interton, Sivantos, Starkey, Bernafon, Beltone, Rexton etc. A good hearing aid would have at least a price tag of Rs 30000 and it would be more for better and better performing ones.
Due to miniaturisation technologies, these devices come in many sizes and due to cosmetic reasons some people will like to go for small invisible sizes also. The cost of these sophisticated devices will also be on higher side. Some of the common types are Behind the ear, Receiver-in-the-canal, In the ear, In the canal, Completely in the canal, Invisible in the canal etc. So, one has to choose the design suiting to ones choice. One thing which is to be confirmed with the supplier is that it should be tested properly while in the customers ear so that the customer is satisfied by the performance. If there is some echo or reverberating sound then the hearing aid machine has to be tuned to the proper frequencies to overcome that problem.
Your audiogram shows that you have severe hearing loss in the right ear and moderate one in the left but if you see the frequency wise loss then there is more pronounced loss in the left ear towards high frequencies and moderate one towards the low frequencies. So, the hearing aid will be designed in that fashion only. Now it will also depend as for which ear you want the machine as the response of the two ears in the audiometry test is wide apart. So your doctor will suggest for which ear you should go. Of course one can go for both the ears also.
Knowledge is power.