Squeegee Sharpening - How Often?

[TCT]

We have just been buying this stuff off ebay-
http://www.ebay.com/itm/Screen-Printing-Squeegee-Triple-50mm-x-9mm-x144-Roll-70x90x70-Duro-/281081165060?pt=LH_DefaultDomain_0&hash=item4171be3504

I was skeptical because $0.65/in for a triple duro seemed ridiculous, but the stuff is NICE! I re ordered a few times already. I am in MN and it ships to me in like 4 days. It is 9mm wide though, which works fine for S.Roques and MHMs. I imagine it would work fine on M&Rs and the like maybe just tighten it a bit more. But for this price it does not make sense to sharpen!

[ScreenPrinter123]

Things have been crazy at the shop but hopefully soon I will get the time to post my do-it-yourself squeegee sharpener. It seems to be doing a great job for something under $200.