After having a look at the one the OP is talking about in the first post, I would not be in favor. The spacers (9 of them) do not look to be wide enough to provide for the recommended space between records (most agree ~ 7/8" to 1"). It claims to do 6 records at a time, so why 9 spacers? Also, those spacers do not appear to have rubber o-rings in between so there's really no way for them to keep fluid from reaching the labels (a prescription for things to get messy and believe me, messy is NOT WHAT YOU WANT WHEN DOING THIS).
AIso, I didn't notice what the speed of the motor is for turning the records. Again, all the research I've done to arrive at optimal turning speed reveals that only about 1/3rpm.....that's 3 minutes to make one revolution.....is going to provide best results. My cleaning cycle lasts 15 minutes, that's 5 revolutions.....speed is NOT your friend here.
Here's what I wound up getting, and I am not associated just a satisfied customer:
https://thevinylstack.com/view-cart/#!/3-Record-ULTRA-Sonic-Spin-Kit/p/51658871/category=13505423
https://thevinylstack.com/view-cart/#!/Sonic-Spin-Record-Drying-Stand/p/52362069/category=13505423
https://www.ebay.com/itm/New-6L-Ult...083766&hash=item2aed1ec7c5:g:z~wAAOSwJdRfER48
It is true that the purchase of the cleaner itself is a bit of a gamble as SaSi above points to. They seem all to be made in China, regardless of the "brand" advertised (e.g. Vevor), and you may get a lemon but if you do, easy enough in most cases to get a replacement of refund. The heater on mine was a bit quirky but I finally got it to do what I need, although heating will take some time and may go warmer than you intend so I keep an eye on it while cleaning.
The vinylstack is adequate, nothing special and overpriced in my opinion, but it does the job and I haven't seen anything out there that I would rather use. If you do wind up going this route getting the drying stand would be, again in my opinion, essential to the process as after using the setup and cleaning over 2,000 LPs in the past year, I can't imagine how I would do without it or at least something that functions like it does. Also, if I did it over again, I would get the stack that holds 4 records as that will still allow you to have the minimum spacing between records. You just have to be a little more careful when putting the records in the tank and removing them as you will have less room at the sides. This will not be an issue as you become familiar with the operation. Vinylstack recommends the 10L tank for 4 records because you have more room, but in discussions with them they agree that the 6L tank will work fine, they just don't want a lot of people complaining that they bumped their records on the sides and damaged them.
So, for somewhere around $50 more, you will be better off....again, only in my opinion.
I'm anticipating your next question as for the solution to use.....man, that one has volumes written on it here and elsewhere of encyclopedic proportions! For what it's worth, here's my "brew:"
50ml Triton X-100
38ml Hepastat 256
72ml IPA added to the Triton and Hepastat
I mix the above in a container (I use an empty IPA bottle) and as you can see, the total is 160ml.
Fill the 6L tank with about 5 quarts of distilled (you will see that brings the level to the FULL mark inside the tank).
Then, measure 20ml of your solution and pour that in the tank, followed by an additional 150ml of IPA (I've used up to 200ml but don't notice any benefit). Turn the tank on and let the transducers run for at least 5 minutes to "degass" the mix and you're ready to add records.....that is, after the tank heats to the desired temperature.
There is considerable debate regarding rinsing after US cleaning and, with due respect, I'm of the opinion that it is a good thing. You already have a spin clean and that is what I would suggest you use in a clean, distilled bath to rinse the records before vacuuming them dry. The VPI would actually be the way to go for the entire enchilada as you can rinse and dry with that after taking them out of your US cleaner.
Hope that helps you a bit.