Tell your prophets to pray and tell your bandits to run.
If you were looking for a very compact 3 watt practice amp this would be one to check out.
Your assertion is that Blackstar profitability on this product is mostly tied to the secondary sales of the 6.5V power supply (the power supply is not included in the base product, but apparently a set of decent batteries are included which, by the way, would cost about the same as a typical China-made power supply at volume)? Seems unlikely. Particularly when this is one of the most compelling reasons AGAINST buying it in the first place. And it is in such contrast to the rest of the product design which is otherwise brilliant.Because everyone owns one and wouldn't need to buy another?