I'd heard of those but never looked them up, always thought they'd be super expensive. It's about $40 for a drive that can write them and $13 each for 100GB media. That's pretty reasonable for durable storage.

Yeah, normally it's not expensive, but since market for these discs are so small here, the prices are at exorbitant levels for M-DVDs. M-BDRs were unavailable, but they are available for reasonable prices, as I just checked.

I have drives which can burn M-DVDs, but I'd need an M-BDR drive. The ones I have doesn't support M-DISCs.