The main dealer if aljazeera smart cards is
"alam itesalat" next to family food centre at nasser street.

yes i just confirmed with my brother who bought 1 two week back,,,yes its confirmed 275 riyals..my bad.it was 100 last year...

okaay...a viaccess HD reciever is hard to find.
try the following places:

Al mashreq (humax & topfield dealers)
al annabi electronics (deals with varieties)

worste case scenario..order 1 from dubai.....