For £150 its a good way to start learning. Not everyone has the £££ to spend on kit that they may not use very often and just want to learn about lighting.
I fully accept that. After all, we all have different amounts of money available, different needs and different priorities. But I feel that there are a couple of important considerations that are worth at least thinking about.
1.
a good way to start learning.
This isn't a boast, it's a statement of fact that I think everyone here knows to be true... I'm experienced when it comes to studio lighting. Because of that, I can not only anticipate (and avoid) lighting problems but I can also identify them immediately if they occur. Therefore, if I can't turn the power down far enough I know how to deal with that particular problem. If my lights produce wildly different colour with every shot I immediately know that the fault lies with the lighting and not with me (even though there's nothing very much that I can actually do about it, other than firing the flash at full power to get as much consistency as possible and reducing the power using ND gels). Same goes for colour consistency, although with inconsistent colour there is absolutely nothing that can be done. If the lights have fixed reflectors and I can't use the light shapers that I really need to use then I can bodge, and still get pretty much the same results.
But these lights are marketed at beginners who don't have the knowledge or skills that I and many others have, and their shortcomings make it very difficult to use the lights as a learning tool. More than anyone, it's beginners who need good tools.
2. Safety. Search this forum and you'll find accounts of lights catching fire, blowing up, dripping burning oil from the capacitors - there may or may not be a risk of electrocution, but for me, the fire risk (especially when used in a house with a carpeted floor and very likely where, unlike a professional studio, there are no fire extinguishers) is enough.
I echo what others have said. It's far better to buy one decent flash head with a stand, and to use a 5 in 1 reflector or a bit of white card, than to buy a set of cheap flashes. And 1 flash is also a much better learning tool.
I'm not trying to flog Lencarta gear. Keeping up with demand is a constant battle, and the SmartFlash heads are about to go out of stock again - although thankfully only for a few days. If budget is tight then please consider buying a second hand flash head from another major manufacturer such as Bowens, Elinchrom, Hensel, Multiblitz (there are plenty of other good ones but these are the more affordable makes)