Sure, and how much does it cost to store the thing, to have it launched, and do whatever else has to be done with a glider? I know powered aircraft are often white elephants in that respect.
Much less than a powered aircraft. Gliders generally disassemble and are stored in trailers; maintenance is limited to the annual inspection, washing/waxing, repairs, replacement of wear components, periodic repacking of your parachute if you wear one, um... I'm sure I'm missing something. One of the big expenses is just non-existent: there's no powerplant to maintain! Launching fees vary widely, but they start at ~$5 for a winch launch. Flights can be as short as 5 minutes or upwards of 5 hours, depending on conditions, endurance, and skill. Insurance isn't free, but it's certainly not prohibitively expensive.
I don't have a day a week to train so I could legally (under the sort of regime being proposed) fly my model aircraft. And they'd cost that same $10k-$20k once all the proposed equipment to do things like respect NOTAMs and restricted areas is put in. Because no one would make such equipment for hobbyists, they'd make it for the commercial market.
Most of the FAA's regulations actually make sense, and the licensing requirements for different categories of aircraft / licenses call for different levels of training - flying an ultralight doesn't even require a license (but the pilots are still responsible for following the rules). I would suspect that a drone rating would be a simple knowledge test, and there would be no practical exam since so much of a drone's flight is automated - it might even be something you could self-study for. Obtaining the required number of flight hours, and otherwise preparing for the practical is what constitutes the lion's share of the time/money needed to get a private/light sport/recreational license - you need to know, for example, what causes stalls and how to recover from them. I suspect the exam would cover things like airspace definitions and rules, right-of-way rules, etc.