Hey bud, hope you are well.
You can just ignore all this if you wana, but I gotta say R5500 for 150watt is reeeeeeaally steep, no matter how you look at it, just to give you a few points.
•the qb style is outdated, anyone spending more than around 3k on a light gona lean more away from old qb style build and rather go for a bar style. design / layout of the build can make a huge impact on growing environment.
•for around 3k you can get a locally built LED qb samsung LM301h/b diodes and a Meanwell driver - currently top of the line diodes and drivers for growing plants, compiled by a team of horticultural engineers, much better diodes than osram got out. (source: https://ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/ )
•local builds sell better cause if anything breaks you can easily have it fixed in way shorter time than having to deal with imported products. and quality really is key here. if somethings imported I expect it to be cheaper or at least quality has to make up for spending so much more. in this case there are higher quality local options for cheaper. that "imported" tag shouldn't make it more expensive as it doesn't add anything to the light itself. it actually turns people away from buying it.
(few options: https://www.greenhouston.co.za/products/quantum-board-led-125w )
if we looking at spending upwards to 5-6k on a qb we looking at more around 250watt. and then it's gotta have samsung diodes + it's locally made.
eg. even within the line of samsung diodes there's a price differences in the LM301H and the LM261C and all the rest, and that's based on their output/efficiency. some are just better than others, I can sit here and explain to you till I am blue in the face, but I also did drop the LEDgardener source for you to have a looksee, all the info is there.
people used to lean towards importing cause SA is stuck in 1950 when it comes to accessibility to top of the line products, but luckily the cannabis community don't wait on no one, we push till we make it and these days people are stocking big names locally, Migrow, Nanolux, Fluence.... those kinda brands, besides that there are plenty of local LED manufacturers that make use of the top of the line products, we even have one here on the forum, Mr.E. builds some of the craziest LED bar lights you can find locally, I come across a few others, I know LEONLED used to be popular, not sure if he is producing anymore....but yeah man, that R5500 for just 150w is like..... it's just way out.
juuuuust a few pointers, all love and respect brother