Note, that is 100 gears! Subtract the coupon, add tax, and that is less the 7 cents a gear!
Obviously there are a lot of duplicates, but there really are a hundred of them, and in several different colors, and/or materials. These have basically no thickness, so it would be hard to make the functional, but they will make great open loads and scenery.
And no, the penny did not come with the set :).
Here are a couple other sets they had. This one would be a little large for HO, but could work in larger scales, even in G.
I am not a fan of Hobby Lobby, but I will have to have them all. This set is particularly cool. These work out, with the coupon and tax, to less than 30 cents each, You can't make them for that. Note there are really only four styles, just three of each, which is the same as the first set shown.