These are the hearing aids offered by resound in Bangladesh and the prices vary substantially with the lower end pricing being approximately 28000 BDT on entry level products and reaching 760000 BDT or above on high end products.

The cost changes really much depending on a number of things:

Technology Level: Lower-end models (such as some models of the Resound Key series) cost less, whereas more high-end lines (such as Resound Nexia or Omnia) with AI, direct streaming, and excellent noise reduction will be quite more expensive.

Isolating-style Hearing Aid: Behind-The-Ear (BTE) Hearing Aids are more affordable than Receiver-In-Canal (RIC) and custom In-The-Ear (ITE/ CIC/IIC) Hearing Aids, especially the rechargeable versions, which are higher-end.

Features: The adoption of features such as recharging, universal Bluetooth support and high-fidelity sound processing (such as Multi-Voice Focus), health measuring and waterproof quality will increase the price.
Channels/Processing Power: The more the processing channels in hearing aid, the more accurate customization of sound can be realized and the more expensive the hearing aid is likely to be.
To receive a more accurate quote, it is a good idea to talk to an audiologist or a certified Resound dealer with territory in Bangladesh to find out the price, as it may vary and is influenced by availability of certain model and any deals that may be going on.