My neck strap came as standard with my Canon 60D camera - and is pretty much the standard package for most cameras. However if you're planning on buying a used camera or your old neck strap breaks then you're looking to pay anywhere from £30-18 for a replacement strap.
If you're planning on wearing your camera all day long then you're probably going to want something that is a little more padded out than this strap, but as straps go I have to say (after wearing my camera for long periods of time) that this is probably one of the least uncomfortable straps and has a decent amount of padding already on the strap - but that could be because I rarely wear it around my neck. I like to wrap the strap around my wrist or hang it off my shoulder when I take photos ;). Also if I need to have it above those heights I'm generally not wearing it around my neck for too long or at all.
Recently I have heard of cameras coming free from their straps and falling to the ground, this makes me wonder just how sturdy these straps really are. With this in mind I've been very careful with my camera - and the strap. I always make sure it's secure on either side of my camera and I don't fiddle around with it an awful lot, which would cause wear and tear to the strap making it weak. I've never had any problems with this strap and putting it onto the camera was a piece of cake, so can't complain in this aspect.
Aesthetically I'm a walking advertisement for Canon as it has their logo and the brand of my camera on the strap. The strap is black which is great because it is handled an awful lot so like the song about black socks goes, it never gets dirty. The logo and 'EOS 60D' writing are embroidered in white on the strap, with a red trim on either side. I like the fact that the writing is embroidered rather than printed on because it will not fade and look tacky.
The strap has two thin (but sturdy) pieces of material either side for attaching onto the camera body. There is also room for adjusting the size of the strap and tightening and loosening the strap. I like to have it as tight as possible so that I avoid camera shake, but it's personal preference when it comes to how tight or loose you like your own strap. The rest of the strap is a thick, sturdy canvas-like material; with one side being material and the other side in a material that is easy to grip and doesn't slip.
I think in future I will update my strap but for now I'm quite happy with it - once it wears down a little I might think about replacing it so that my camera is safe for use, but for now, while it's still very new I'm happy with it. As I don't heavily wear my camera around my neck I don't find the strap is uncomfortable, I feel confident about using it and I'm happy with it's condition. Overall it's a 'good' strap, serves its purpose and keeps me happy.