Erc20 Transfer Gas Cost. The sending will only consume the token as gas fee. In the chart below it is obvious which transactions will incur the higher gas fees.
You need to talk for getting average cost for developing your erc20 tokens. Erc223 erc 667 etc depends upon your standards. Now in bitpie wallet any erc20 token can be transferred without eth as gas fee.
Regular eth or erc20 transfers are already expensive at 1045 and 2050 respectively.
By looking a erc20 transfer calls on etherscanio it seems that the gas cost is between 50000 and 105000. In the chart below it is obvious which transactions will incur the higher gas fees. To send 1 token is the same price as to send 100 tokens. So the fee is usd 21.