I've got to say- I'm jealous about these deals Sixto. The best I can come up with is a used 229 for $600.
I know where you're coming from on the urge to buy. I've been a compulsive for about 2 years.... Hmmm. about the same time I've been on this forum.
Lately I've looked at what I have and what I need and got rid of several guns. I still have the urges, but I have been more conservative.
Ask yourself this: How many Sigs do you have? How much better is this one? Why do I want it? There are alot of Sigs in the country, how many do I have to buy to feel great?
I guess nobody likes the wet blanket guy in the room, but those are my thoughts. I'm talking to myself as well.