Hi, welcome to RIU
Quality LEDs are not cheap, as you are finding out the more you search. You are also finding out that false advertising in the LED world is running rampant. Some of these compainies have no shame and will say anything to sell a light, even if they know its complete BS. 1212 gave you the list of Proper LEDs/companies, Now im not saying the old school blurples from amazon cant grow ganja, just saying they arent on the same level as those listed by 1212
even the DIY route isnt cheap once you start ordering what you need, but its def the cheapest way to get top quality LEDs in your garden.
I think at this stage you will be much better off buying a small mh/hps setup and saving up for the proper LEDs you want.
Mars sp250 is not considered top LED, you can build a much better light like Corey Webster told you about for cheaper than that Mars light, you will be much happier with the end product.
Best of luck, happy growing