Found an interesting list of products at American Porch, LLC.

Product	Price
6" Non-Tapered Square Column Height: 9' Flute Options: Smooth Choose Trim ($67.00): Craftsman Cap & Base Split Option: A: Whole Reassembly Kit for Split Columns?: No thanks	$417.00	Add to Cart
6" Non-Tapered Square Column Height: 9' Flute Options: Smooth Choose Trim ($67.00): Craftsman Cap & Base Split Option ($62.00): D: 1/2 wall engaged pilasters (2 half columns) Reassembly Kit for Split Columns?: No thanks	$417.00	Add to Cart
Smooth Newel Post, Poly - 5 1/2" Poly Include Cap? ($36.00): Classic Cap Include Installation Kit? ($35.00): Yes, Wood Floor Include Bottom Trim?: No thanks Include Balltop Finial?: No thanks	$124.00	Add to Cart
4" 4-pc. Porch Rail System, Cedar Length: 10 feet (+$5/foot) Bottom Rail: Flat or Sloped?: Sloped Bottom Rail Priming Option: Primed (+$5/foot) Include Rail Install Hardware? ($39.00): Yes, for standard rail	$440.00	Add to Cart
4" 4-pc. Porch Rail System, Cedar Length: 8 feet (+$5/foot) Bottom Rail: Flat or Sloped?: Sloped Bottom Rail Priming Option: Primed (+$5/foot) Include Rail Install Hardware? ($39.00): Yes, for standard rail	$352.00	Add to Cart
4" 4-pc. Porch Rail System, Cedar Length: 7 feet Bottom Rail: Flat or Sloped?: Sloped Bottom Rail Priming Option: Primed (+$5/foot) Include Rail Install Hardware? ($39.00): Yes, for standard rail	$273.00	Add to Cart
4" 4-pc. Porch Rail System, Cedar Length: 5 feet Bottom Rail: Flat or Sloped?: Sloped Bottom Rail Priming Option: Primed (+$5/foot) Include Rail Install Hardware? ($39.00): Yes, for standard rail	$195.00	Add to Cart
4" 4-pc. Porch Rail System, Cedar Length: 9 feet (+$5/foot) Bottom Rail: Flat or Sloped?: Sloped Bottom Rail Priming Option: Primed (+$5/foot) Include Rail Install Hardware? ($39.00): Yes, for standard rail	$396.00	Add to Cart
1 5/8" Square Baluster - Western Cedar, 26" Priming Option ($3.00): Primed Notch for Sloped Bottom Rail? ($1.00): Yes, Bottom Notch	$10.00	Add to Cart