I have had extremely good fortune with online purchasing. I buy a lot of items online, mainly because I live WAY OUT in the country, and driving into town is a chore, to say the least.
I literally stocked my new shop with items purchased online. I have found several good sites to deal with, and I stick with what I know.
Amazon, Rockler, Peachtree, Grizzly, Woodworkers Supply, Tool Crib of the North, Northern Tools (to name a few) have all been very good. Items were as advertised, shipped quickly, and customer service was very good.
Also had some bad experiences, which is why I stick with who I know is giving me good products, good delivery, and good service.
Buyer beware, and stick with the online retailers that you have had good service with.
Just my humble opinion...