That design and color looks a lot like the one my tractor dealer sold me for $425 with my tractor package discount when I bought my tractor. He assured me that it was "real heavy duty", but he did not have one on the lot so he had to order one in. Thus was my trust in my dealer shattered.
When he delivered it with the tractor about a week later, I was very, very dissatisfied. I was a newby to tractor ownership, but had seen enough box blades to know that it was the among lightest box blades made. I have seen the one I had, a six foot model, for sale locally elsewhere for $299. The local TSC has heavier blades for $100 less than I paid. My local John Deere dealer had one for $25 less than I paid that was a massively constructed thing compared to the one my dealer shipped to me.
Unfortunately, because I need to put it to work the day it was delivered, and my non-confrontational disposition, I kept the light weight one.
In addition to thinner mold boards and lighter three point frame, the rippers aren't mounted in a tube frame like a real heavy duty BB would be. It would take a lot less force to twist the metal or welds off with this design.
To top it off he delivered it with the rippers bolted on instead of pinned on. When I pointed it out to the delivery man and said I sure don't want to have to carry a wrench around (and in a difficult place to reach at that) for every time I want to drop the rippers, he said they would give me some pins if I would pick them up.
I spent over $19,000 on a tractor and implements, and he suckered me over a stupid box blade. I did not dicker him down $1 from his original offer. It made me feel very unappreciated. I've bought a tiller, a bush hog, a plow and sub-soiler since then, and I haven't bothered to shop his lot. That is how a dealer can screw up his relationship with his customers.
This is also why I have found it extremely difficult to order merchandise sight unseen. I hate that type of rude surprise.
Edit: This was in reply to Pooh_Bear's linked image, which upon further scrutiny, appears to have the scarifiers mounted in a tube frame, so it may be even heavier duty than the one I received.