This Robert's post drew my attention to a great way one can try out iontophoresis without buying an iontophoresis machine right away.
Since Fischer Galvanic machines are already well known for their quality, I don't mind that they are the only available machines in these offers, but the main dilemma is: is renting better than buying?
To me it seems that renting is only preferable if you are planning to buy a Fischer Galvanic, but want to be 100% sure that iontophoresis works for you before you actually make the final decision. In the long run, I think I would rather buy an iontophoresis device as soon as it proves itself to be effective. That way, I don't have to worry about future expenses.
And what do you think? Other opinions are more than welcome!