Originally posted by: iamwiz82
What is the cost/sq ft for a diy-er? I've got a big garage (around 24' by 34').
With a cheaper product, such as Epoxyshield Garage Floor Coating, you can get ~200 sq ft out of a ~$50 box. You can get more area covered in smooth concrete than in rough concrete. Thus you are looking at about 4-5 boxes, or $200-$250. That doesn't count the cost of pre-cleaners or paint supplies.
The price goes sky-high beyond that for professional versions of the floor epoxy. You should count on ~$500 for the epoxy for a floor your size.
This is something that a professional charges an arm and a leg for. Home Depot charges $1.50 to $3.25 per sq ft to do it for you (depending on epoxy quality). That is $1225-$2650 for a floor your size. That approaches the cost of just replacing the entire concrete slab.
To answer the original poster's question. No. Due to the cost I didn't. It is on my "maybe someday" list.