Ebay would be the best bet. But if your local newsagent has a pile of them stacked up, then there's no problem with you buying one. You'd just pay for 100 packs, no more, and I presume, no less.
No!
yes
in a shop
985
about £10
Phdmxz8bx
on conputer
in packs
Blue
Were to find matchattax
You can get it at Argos
green