$45 for an All City cog is a total ripoff. I'd avoid Surly; I've had bad luck with them. You should mail order your cog and lockring from RG >>>
components - cogs | lockrings | Retrogression
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What, Me Worry? - Alfred E. Neuman
I'd like to think i have as much money as brains.
I see the light at the end of the tunnel, but the tunnel keeps getting longer - me