Woot has some sight mark red dot sights on sale as well as a few other brands. Not sure if they are good deals or not but if you want to take a look here's the link

 

http://www.woot.com/plus/sights-and-optics-3?utm_source=Daily+Digest&utm_campaign=c9bad74365-Daily+Digest+-+20130711+-+Woot&utm_medium=email&utm_term=0_c5ca76da11-c9bad74365-292035637

are those any good?

I don't know but I figured if anyone was looking for them or knew more about them then I do I would put it out there

For what you pay for it, it's great.  I have used Sightmark products and have had good luck with them.  Some complain about them, but for me they have held zero, and fit the need they were expected to.  Along the same lines as a Bushnell TRS-25 or other product. 

I have the sure shot reflex sight on my mossberg, It has stayed zero in after a hundred rounds of buckshot.  

Looks like the reviews on the Mini Shot look pretty bad.  I'd pass on that.