I think you're really underestimating the value of being able to to load test individual cells. I've learned so much about the performance of my cells by running all kinds of discharging tests and in a world where you have no idea if you're getting garbage Grade B or good Grade B a discharge test is the only way to really know for sure.
The ZKE Tech EBC A40L is $199 USD shipped right now on Aliexpress, there's this Atorch 40A fan discharger for $77USD shipped, and there's a new 50A tester under the Hel Tec brand name and some alphabet soup brand name like YDPSZ that I've seen under $200 USD shipped.
The Atorch can be extremely flexible with its voltage range but without charging the A40L and new 50A tester are really an amazing bargain. A 40A electronic load is typically more than $500, I can only think of two that have the ability to do 40A under $400. They will save your ass when one day you get sent shitty cells. I've seen sellers dispute series connected cells by using the argument that buyer has not properly top balanced blah blah blah with enough bullshit to confuse the arbitrator. My A20 cost me $90 USD shipped and it has already paid for itself in the refunds I've gotten (while still keeping the product in some cases). I regret getting the A20 due to its 85W limit but it does have the ability to charge up to 20V 4.5A (based on your power adapter) and discharge up to 30V as long as you stay under 85W and under 20A. So a bit more flexible and the A40L couldn't be found so cheap when I purchased the A20, the A40L used to be $270+ pretty much everywhere and this week I've seen it for $199 USD and $212 USD shipped.
At the very least a $35 to $40 USD shipped DL24 150W or 180W max 20A model is good to have around. They have several variants that do 20A, 23A, and 25A then the splicable version that depends on if you have 1, 2, 3, or 4 cooling units to do 25, 30, 35, and 40 amps at 150W, 300W, 450W, and 600W respectively but like I said once you pass the $40 USD mark just bite the bullet and get the A40L or the 50A tester.
ZKE Tech also make a tester that can handle batteries up to 100V (72V or 84V nominal) and do either 10A or 20A discharging. EBC-B10 and EBC-B20. I believe both have inputs for you to add your chargers leads if you want to set up cycling tests.