These are worth much more than the price point suggests. They sound great and in their own right you can do some great demoing just with this set.
However, with some careful adjustments, and if you can extend your budget to add 3 extra mics to the set (for approx. £190 extra), these can be used professionally for recording.
Firstly, when setting these up: I’d suggest getting an extra long extension for your headphones so you can sit in a different room listening carefully while the drummer plays. If you take the time to carefully place these mics and adjust the placements to taste, you can get a great sound out of them. These also need you to do more work EQ-ing, compressing, and either chopping up or gating (if gating, do it side chained to sample hits that have been accurately time-aligned and then muted - much more accurate) the Kick, Snare and Toms. This is it’s really worth the effort for learning a bunch of new tricks for getting the sound of each drum bang on in context.
My biggest gripe is with the overhead mics. Unfortunately they don’t seem to have enough headroom, so clip quite a bit. This is fine when just hitting K/Sn/Tm as it’s only the initial attack that gets clipped, which is quite a pleasant sound in context - but for cymbals it can create a slightly nasty effect, which in context isn’t great since the whole kit sound is getting clipped, sometimes quite badly.
To deal with this, I’d highly recommend either placing these a lot further away than you should [not an ideal solution] buying the t.bone EM 700 stereo pair (roughly £50 when I last checked + XLRs + stand, maybe £90 all in) to use instead of the overheads in this set. These have a better sound overall for OH mics, and more headroom - plus you can then use the included OH mics as a stereo room pair, in which case the clipping works in your favour and is less extreme since they’ll be at a distance. Although if you only have an 8-channel audio interface, having room mics isn’t really an option!
Additionally, if you have the budget, I’d highly recommend getting an SM57, SM58, or SM58 beta (my preference) to use for the top of your snare, with one of the included mics for the bottom. This will give you a better sound overall and free up a mic if you’re a three-tom drummer!
Overall, as I said, this is a great set in its own right for demoing - but if you spend a bit extra to add to the set, spend more time getting the setup just right, and get the EQs/etc right, you can use this same set to sound surprisingly professional. I’m happy with this purchase!