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I didn't really keep an exact track of the total cost. In just materials it was probably around $300 or so. The playing surface was $115 with shipping. The oak was like $90. The melamine that is under the neoprene was like $25. The pine 2x3s and 2x4s were probably around $60. I also had to buy some tools, clamps, and random other things, though. It probably cost ~$500 total.
The chairs I got from Amazon. They are super comfy for folding chairs. Home Depot has them in the store if you are thinking of getting them and want to try one out before buying.