Yes
I think it’s a pretty good option at a mid-level price point (in comparison with other options). Any dry-fire you can do will help tremendously. If you can avoid manually racking the slide and add feedback (laser and or mantis) then you get the “most” benefit… but also at the “most” cost.
You can do dry-fire practice for basically free. Just point at a target (wall switches are everywhere in your house, or just print some out on 8.5x11 and painters tape to the wall, or even just painters tape “x”), pull the trigger. The ages old technique of putting something on the slide (like an empty case) and don’t let it fall will really help with trigger control. You can get really far, and I would say better than most people, just doing this.
It’s when you want to step up your dry-fire game that ends up costing you money 
The type of firearm you are wanting to train with matters. Is this a small CCW or your full-size home defense pistol? Is it striker fired (aka Glock, etc) or a hammer fired DAO or DA/SA?
If it’s DAO or DA/SA the “racking after pulling the trigger” issue isn’t really an issue. You just keep pulling the trigger and the hammer keeps falling.
If its striker fired, then you need to be either really aware of what you’re doing so you don’t build bad habits, specifically racking after every trigger pull. You have to interrupt that “auto rack” by doing something else in between (like a pause or look around or say something etc). For me, that was really difficult so I looked for an alternative. YMMV
If you’re running something that needs a slide rack in between trigger pulls and you want to avoid that, then you have several options.
@Jerzees mentioned the Mantis TitanX and that’s a really good value for the money. I don’t have experience with it personally, but it sounds like it feels like a “real” Glock trigger, and is the same dimensions, weight, fits same holsters, and is even optics-ready. Not only does it auto-reset the trigger, but it also includes the laser. If you are using a Glock for CCW or HD (like a Glock 19/17) this is a shoe-in, easy choice.
SIRT has been making training pistols forever (the OG) and has models in different sizes and a few more manufacturers (S&W, Sig, plus Glock). Same benefits as the TitanX but are notably more expensive.
One of the biggest advantages of the TitanX and SIRT, IMO, is that it is very clear you are practicing with a non-firearm and you have zero chance of putting a hole in your TV (or worse).
DryFireMag is an “in-between” option in that you don’t replace the whole firearm, but rather use your own firearm and just swap out the magazine. So it’s your trigger, optic, grip, light, etc that you would normally use. They support more brands/models than TitanX or SIRT. If you get the non-laser compatible magazine its relatively cheap but the one that comes with a laser (it has to be their laser) it gets really pricey.
Another “tweener” is CoolFire, which replaces your barrel with a CO2 cartridge that not only resets the trigger but actually runs the slide giving you felt recoil. They support a good number of brands/models but also get see that cost going up.
All of them have AR15 compatible options as well.
As far as advice… If you are running a Glock for CCW/HD I’d probably start and stop my search at the TitanX. If you are running another brand/model I’d see who has a compatible option at the best price. If you’re running something that isn’t covered… you have to be OK with training something that is not similar to your firearm …or… then you just have to rack the slide 