I don't buy real expensive stuff either. Take my leg press for example, it can only hold 400lbs, but it is vertical, so it's significantly more difficult than a 45 degree sled, and I just do 1 leg at a time. I'm fairly strong for a bodybuilder, but I can't vertical press anywhere near 400 lbs. I can do 260 lbs for reps, which for me is equal to doing pistols with 50 lbs strapped to me. It doubles as a calf press too, and half my plates are used, the other half are an off brand.
For vertical pull, I have chin up/pull up bar I got for $20 on amazon, and a dip belt that cost about the same.
I do have a complete Powerblock set (all stages), but not the coated model. It did cost me $1K, but compared to a dumbbell set that goes up to 135's, it's quite cheap. My stands for them are two stacks of two cinder blocks, which were free. My bench is actually my wife's, which she had before we even met. It's one of those cheap fold up things too.
I got a standard curl bar for $25, mainly as a way to make use of the plates I had from some adjustable dumbbells I had been using in the past. Stuff I got for cheap at wal-mart I might add.
You only spend as much as you have to. There is no reason to buy stuff that is meant for high capacity and withstanding abuse, when those are not issues you need to address.