I worked on the benches and table for three weekends. All are finished in Ebony by Rustoleum. I used the non-Kreg plans for the benches and the updated Kreg jig plans for the table. I spent a lot of time at Home Depot selecting straight, flat boards for the table top. I literally dug through all of their 1 x 6's and laid them out on the floor in the store to find a good fit. I finished the benches with three coats of Minwax semi-gloss, and I finished the table with three coats of Minwax gloss. I prefer the higher gloss so I may put a coat of gloss on each bench so they all match. I also put some heavy duty furniture felt on all of the legs so they slide easily across the wood floor without scratching! I've been using a sad hand-me-down table and folding chairs for the past couple of years. I couldn't be more pleased with how this turned out.
I live in Alaska and the lumber for the benches cost about $35. The lumber for the table cost $65. I spent about another $100 on wood conditioner, stain, polyurethane, screws, sand paper and a brush. So all total, I have about $200 invested.