The Raiden network, which is a off-chain layer 2 implementation based on ethereum has no transaction costs, see link under transaction fees here. The transaction fees are not a factor in gas cost for a raiden (layer 2) implementation- the real costs of a transaction using the raiden network is the cost of setting up the payment channel - the question is what is the gas cost for setting up a payment channel in Raiden(any estimates or ranges for gas costs while setting up the channels)?
1 Answer
With every contract version bump new gas estimations for all calls are added alongside. For the latest version of contracts (0.10.0), gas estimations can be found here:
https://github.com/raiden-network/raiden-contracts/blob/master/raiden_contracts/data_0.10.0/gas.json
If you will have any more technical questions about Raiden, I recommend you check out official developer gitter chat as that is preferred way of communication at the moment:
https://gitter.im/raiden-network/raiden
Hope this helps! :)