This is the ECE-R44 standard. The Pallas S Fix complies with the ECE-R44 standard and not with the ECE-R129 / i-Size standard.

Isofix is included, also the plastic guides which makes using the Isofix much easier

Yes, the Isofix fastening is available.

Yes, the ISOFIX system is integrated in the product.

When this was still available with us, we were able to offer this item at the price of CHF 274. Unfortunately, this item is sold out and we have no information if and when we will receive it again.

According to our own research, this is the 2019 model.

Black doesn't seem to be available anymore, but since it's the same model: The colour?! Even with smartphones, different colours cost different amounts. Pricing (everywhere) is made up of several factors. Galaxus employees have often written that price changes are, for example, daily price adjustments that develop from the conditions of the respective suppliers, among other things. The current price also depends on such factors.

The S-Fix is the successor to the M-Fix and differs very little. For example, it has better padding, but is narrower and has a wider seat surface.