The edging is 5 in. high and flexible.
There are no ties to connect the sections together.
Different Home Depot locations could have different retail prices.
Not sure. Did not see any other size at the store.
The logs are 3 in. wide
Yes, buy some stakes to help support the edging posts. Then cut the strip of rubber that they are adhered to. You won't have the anchor nail on the end. Just use the stakes to hold them secure.
They can and do in my yard. Thoudh one thing I would keep in mind is that there are only those 2 stakes on the two ends at the bottom. So, depending on whether this is a high-traffic area, or if these get bumped by lawnmower, etc, they are not what i would call 100% stable. You will need to work sometimes to get them upright. But they look great and are holding up to very hot weather now for 2 years.
Depending on where you are using them, you can add your own extra support on the inside edige using stakes, or even screw in different gardening stakes you can find in the gardening area. The other thing you can do to help them to stand up better is to trench the area a little before you put them in so they are not only on top of the ground, although I know that defeats the purpose of them being "easy" to just stick in the ground.
I never measured them. From memory I would say at least 5 inches tall.