For the purchase of goods in Brazil there is no problem. You shall as everywhere, make some steps and checks:
Obtain a CPF (Cadastro de Pessoa Física), document for the taxes, indispensable control reference, even for the Brazilians. You can make the demand in your embassy or in the organism which manages this document, 'Receita Federal'.
Verify the documentation of the good to be bought with the notary puclic (Cartório).
Verify with the 'Receita Federal’ the regularization of the taxes and the fiscal situation of the salesman.
Establish a contract, if possible, with the presence of a lawyer and the register for competent notary public (Cartório).
Establish a company
It is possible for a foreigner to open a company in Brazil. For this he shall:
Have a resident administrator in Brazil. This person can be a Brazilian or foreigner.
Inquire of all the steps with an accountant or with the 'Sebrae', a organism of assistant to the new business start-up.
Present your passport and have a CPF (Cadastro de Pessoa Física), Brazilian document for controlling of taxes.
In case of international transfer of money a registration must be made with the Central Bank (Recife).
Without being indispensable, the assistance of a lawyer is advised.
The first step will be the registration of the company for the obtaining of the CNPJ (Cadastro Nacional de Pessoa Jurídica).
To obtain investor's permanent visa
It is possible to you to obtain a permanent resident's permit in Brazil, by making an investment. The procedure is long and uncertain, because it is not only about money to be transferred to spend it, as the purchase of a land or a house, but a productive investment.
To ask for this visa, you owe :
Start again or create a productive activity.
Invest with the request of a minimum amount of USD 50000
Present a file of new business start-up and jobs to the National Council of the Immigration.