The selfmade concrete weight of 800 kg for $500 sounds like a great deal. Considering the sturdiness and durability of concrete, it seems like a smart investment for your workout equipment.
As for the additional options of color change and added reflectors, these enhancements can be quite practical. Changing the color can make the weight more visually appealing or help differentiate it from other similar equipment, while adding reflectors can improve visibility and safety, especially in low-light conditions.
Overall, with these additional options, the concrete weight becomes not only functional but also customizable and safer to use. It's great to see the attention to detail in offering these extra features to cater to users' specific preferences and needs.