for postpaid users: plans are
-lite(2gb) for 80 riyals/month
-Plus (4gb) for 160 riyals/month
-unlimited for 320 riyals/month

for prepaid users: SIM packs cost 250 riyals and include 10 days unlimited internet access:
top up denominations ar:
3 days for 90 riyals
10 days for 250 riyals
30 days for 420 riyals

Devices (usb modem/router) are sold separately...