Alto did not have any chance but to create an account in the game, though it was not recommended it was his only option. Aside from the account that contained the in-game currency, real money could be stored in a separate account like an in-game bank. Alto made up his mind to open an online bank account later, after he had concluded the transaction with Mister E and received his payment, his client was still not done with him.
It did not take long for Mister E to confirm the authenticity of the product, apparently there were many fake versions of old gen mechs this made Mister E interested in him. His client ended up giving Alto (Bob) his private contact in the eventuality that he came across another old gen mech design.
Alto did not turn down such and interesting offer to make free money, he could just have the mech designer protocol search for another degraded washed up model sometime in the future.