Yes, they are white and transparent on one sheet; actually the sheet is transparent and the printing machine has the possiblity to print white. You also can order special colors like gold and silver (not mixed from other colors and really shiny like gold and silver).
Ordering can be done nearly in any size: you can order a complete A4 sheet or just smaller pieces (for printing of smaller pieces he will arrange your order with others on a complete sheet and afterwards cut off your section). More information about the homepage of this guy can be found on my
Web siteAnd yes, they do Internet orders, but not as classical online shop: you have to get in e-mail contact with the guy and have to provide the motive also via e-mail. He's a very friendly person and will answer all your questions.
Hm, price ... to be honest I can't remember. It has been over 20 (or 30?) EUR for a complete A4 paper -- sorry, can't remember (have to look it up ... if I can find the bill). But price will only by about size you really ordered. Currently I'm preparing anothing order, so if anybody wants some small stuff to be added, just give me a hint.