The honest floor is 50,000 BDT for one properly built tool — say a fee tracker, a lab-report system or a simple stock-and-sales tool — with real database design, not a template. More moving parts (staff roles, SMS, multi-branch, deeper reports) move you to 90,000 or 1,50,000 BDT, and a full ERP or booking platform starts at 3,00,000 BDT. Terms are 50% advance, 50% on launch. If your idea genuinely fits the cheap tier, I'll confirm it on the first call; if it doesn't, I'll tell you straight rather than sell you a 50,000-taka thing that can't do the job.