With the 445nm diodes being relatively cheap per piece, I thought I'd summarize a few bargains for the ones looking for 445nm's with a restricted budget.
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DinoDirect: 500mW waterproof @ $96.19 incl S&H (1000mW @ $161.69)
DealExtreme: 1000mW with 5 diffraction filters @ $147.80 incl...