I recently had some problems with my starter making that caused my beer to take about 5 weeks to ferment. Basically, I underpitched. For details, go here: http://www.homebrewtalk.com/f163/am-i-doing-something-wrong-my-yeast-starters-237788/
Anyway, a Wyeast pack costs me about 15-20$ when I order them online because of shipping. If I buy more than one, then shipping per unit goes does, but it's still expensive. My LHBS is unreliable when it comes to what they carry.
So anyway, I would like to wash my yeast to bring my per-batch cost down, but I don't know if this yeast is ruined or not. Assuming this beer turns out OK (not bottled yet), should I wash the yeast (and make a good starter later), or just dump it and call it a learning experience?