Sorry don't know where you can buy some but I have a front wheel built with dt ti spokes and they're great. Been told some issues with them but I've crashed them a few times and had no problems. Don't know why dt stopped making them.
Go check out the PDF on the site for list of prices. Jeremy at ABW sells Pillar Ti 1422 Aero flat bladed spokes. Lightest Ti spokes on the market. Claimed to be 25% less stiff than Sapim CX-ray. So gut feeling would mean they are along the same lines as the DTswiss Revolutions 1.8 double butted spokes.
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