you could get some 5-pack Verbatim Pastel DVD+R (which are TY-Discs) in slimcases at Amazon.de .
e.g. Verbatim DVD+R 4x 5er-slimcase-pack for 5,99 EUR
Verbatim DVD+R 8x 5er-slimcase-pack for 5,99 EUR (some weeks ago for only 3,99 EUR )
Not the cheapest ones but in local stores you pay 7,99 EUR and don't forget that you don't pay p+p at Amazon.de when buying for at least 20,- EUR (and you get (colored) slimcases )
Ups, the 8x are temporary out of stock and the 4x are nearly out of stock :sad: