Cheapest way to buy BTC and hold on Nexo?

self.Nexo1m ago
As per title. Recently moved crypto to Nexo, historically was buying on Coinbase Pro for low fees. Will it be cheaper to continue buying on Coinbase Pro and sending to Nexo, or buying directly on Nexo? And what about ETH? Would that be cheaper on Nexo as I wouldn’t have to worry about gas fees? Thanks