It's like "clockwork devices", except using parts of machines left by the Ancients. You know, like in Barsoom there's devices that were left by the ancient civilisation, which had science incomprehensible to anyone alive today. Meaning, for the most complicated designs, you'd be tinkering with technology that can hardly be reproduced!<br/>Only some parts of the setting have the infrastructure - and yes you need it for more complicated devices...meaning they also get expensive. Using it ain't free.<br/><br/>Ampere was interested in this as well, so you two should consider whether a common interest would unite the party (even if there might be a degree of rivalry), or contribute to<em>unnecessary</em>rivalry. As long as it's the former, I'm fine with it.