Banglalink is now offering a special “bulk” pricing. With this offering you can buy talk-time and sms in advance at a discounted price.
Pricng for bulk minutes:
100 minutes for tk. 299 - tk.2.99/min (validity 30 days)
50 minutes for tk. 175 - tk. 3.50/min (validity 20 days)
Pricing for bulk sms:
50 sms for tk. 40 - tk.0.80/sms (validity 30 days)
20 sms for tk. 20 - tk. 1.00/sms (validity 20 days)
For more details and instructons: http://www.banglalinkgsm.com/html1/bulk.php