Ok, let's do some maths....
the 16 strips i referenced were different -- they are influx s02s, each with 24 lm301a (different higher power led), running 12.1V and 16W. I mentioned using 16 in a 4p4s config to fill up the available power from a HLG-185h-48a (185W driver). In this case, you are well over powering the nextlight mini 150w. The influx s02 costs $4.88 each, let's round to $5. $5x 16 = $80 plus $23 for the discounted HLG from bgmicro only brings you a hair over $100. A large 18x26 baking sheet = $15..... so this is apples to oranges because of different diodes, but it is very similar.
My testing was done with a 33W strip using 72 lm561b (same as nextlight). To match nextlight power, I only need 5 of them but I'd order 6 so I can do 2P to hit my 48V from the driver. So, 6 X $11 = $66 plus the $23 driver and you are under $100 still.
the nextlight mini is 150W for $600. I'm not hating on them, they are just making a healthy profit as far as I can tell (again I concede testing and certification and warranty counts and costs). I like DIY and I like to know what the basic parts cost.