Quite a few here have built watches from kits, and many use various AliX parts in their builds.
There's nothing like the challenge and satisfaction of building your own watch, but that option doesn't always appeal to everyone, and if you don't have the tools, skills, and patience to build it yourself, you may have some frustrating problems along the way.
I built a few vintage Omega Constellations and a couple GMTs using AliX kits, since they were super cheap (like $50-100). They're great for the money, although no competition for a better factory built rep. The cost of that particular kit approaches "decent rep from a factory via a TD" territory, so in that specific case, I don't know that I'd jump on the one you linked.
I think you can get that watch in an older Noob rep (the AliX link appears to be Noob parts or at least attempting to pass the watch off as Noob parts, per the clasp protector) for around $250-300ish from a TD, which
includes the movement (the kit doesn't seem to include the movement).
This is a link to Trusty, to use just one example, of the same watch, built up with a 2836 movement. Trusty offers some discounts for using specific payment methods, but charges for shipping, so the final cost is probably just a hair more than the AliX kit, or less if you factor in the movement. Other dealers may have it even cheaper, Trusty is just the page I happened to have open at the moment.
Trusty Time Watch ROLSUB0276B - Submariner 116610LN 904L SS/SS Blk V10 Noob A2836 [ROLSUB0276B] - Noob Factory Rolex Ref.116610 Submariner Black in 904L Steel Best V10 Edition with Updated Ceramic Bezel & Casekit & Dial MOVEMENT: Gold Plated Asia 2836-2 Automatic Movement, 28800bph CASE...
trustytime888.io
Many AliX stores offer an assembly option for a very low cost as well...IIRC, I paid $5 per watch to have the seller assemble a couple I bought...it seemed preferable than risking botching something during the build.