Finally a good new tape, I bought ten but they arrived without the 10x box RTM issues, and were delivered loose in the package - sent in the RTM box which would have been better as some cases were damaged in transit.
The tapes themselves are good, with excellent sound and a standard build quality for a 'normal' tape, so no complaints really apart from the price which I find a bit inflated. The company in France seems v.passionate about their product and I'm happy they are able to continue making these niche products so maybe that's the pay-off for production in Europe and using an outdated media format.