I have a sigma x for $100. I don't have the spacers that go underneath, but I'm sure you can get a few from Tririg for cheap if you email them. I never used any when I used it- not needed if your stem is all the way down, or you can use standard round spacers under it.

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RyanGiuliano / http://www.ryangiuliano.com / 2018 IM TX, IM WI, IM Kona

I have the omega x. The plastic cover has small crack in the corner. Function perfectly.