Honest answer: a project to properly set up SEO — technical fixes, on-page work, Google Business Profile and a content foundation — starts at 50,000 BDT (basic), 90,000 BDT (standard) or 1,50,000 BDT (advanced), depending on how competitive your Dhanmondi niche is and how much your current site is fighting you. Fully custom builds that include a new SEO-ready website start from 3,00,000 BDT. Terms are always 50% advance and 50% on launch, by bKash, Nagad or bank transfer. Anyone quoting you 5,000–8,000 taka a month for "complete SEO" in Dhanmondi is selling the illusion of work, not the work.