I've only bought from Titanium Joe and Online metals. Freight for one small piece is the big expense, better if you order a bunch of stuff at once because the freight isn't much more. Maybe not so badat inchofmetal?
It was $9 something for shipping. I have to call a friend to see if he can face it for me on top and bottom. I want to get rid of my compound slide. If I need it itwont be hard to unbolt this and put the slide back on.
You might check Ebay. I know Ebay is "sooooo 1998" but there are a lot of places that have "free" shipping where it ends up actually being less expensive than other places. You always have to look at total cost.