Although the cuben Duomid is lovely, it is probably the worst value for money weight saving that I’ve ever indulged in. Essentially I’ve paid £134 for 200g of weight saving (the difference between the silylon and cuben versions). It was a “want” rather than a “need”, but backpacking is still a relatively inexpensive hobby compared to many. If I had taken up golf on my retirement, I would have spent a lot more money.
However, one (slightly) better value for money purchase that I made from MLD at the same time as ordering my Duomid was to buy their container set @ $25 (£16.60). At first blush, this doesn’t seem very good value, but I’ve been hunting around the internet for a similar package of dropper bottles from the UK, but couldn’t find any. The only ones I found, you needed to buy a lot to make P&P worthwhile.
Despite having a whole variety of plastic containers left over from various products, many are a bit on the large size, especially for 2-3 day trips. So the ability to decant amounts of soap etc. into very small containers should save some weight and bulk. I’m unlikely to save 200g, but the ratio of money spent to weight saved should be better than the Duomid!