MTTP right? Beware cheap Chinese ones that falsely claim they are, obviously PWM is more common under say $100.
That's a very large current requirement for the lower-quality units,
may be cheaper if you want good quality, and more efficient, to go with multiple smaller ones.
Best IMO to determine which specific model(s) you want and check out eBay. CL is lots dicier, but you might get lucky, need to be able to test on the spot.