Magician's Wax Gimmick

Is the color of this wax from magic makers yellowish, as pictured? i recieved one from holdingwax that was clear, and would like another the same.

What is the actual size of what is being shipped by magic makers? the description says 1 ounce, but shipping weight is .03 ounces. very decieveing.

Is this wax used for invisible decks? Thank you!

Can someone post a picture of what this actually looks like? Is that block one ounce or do you get more than one?