I can't believe no one wants the fire department to burn their house down this time of year to get a tax deduction. All joking aside, this is pretty common these days and in the near future we will be able to run the ultimate fire benchmark.
As for the benchmarks we did run, the system feels a little slow and the response time is a lot slower than what we are used to. I was able to find products on ioSafe's website that used more advanced interfaces, but once you get out of the Solo Series the cost rapidly rises. ioSafe has been making total protection products for many years now and some of the systems can cost as much at 20K USD.
As far as the cost of the ioSafe, I think it is a bargain for what you are getting. With an entry price of just 150 USD it would be hard to beat that price just for the thought of keeping your really important data safe from a fire or flood. The 1.5TB system maybe a little more realistic for most families with large collections of pictures and family videos and it has a total cost of 400 USD once configured with maximum protection.