Cheap, built right
Cheap ecommerce fails on the build, not the budget
The Dhanmondi store owners who come to me for a rebuild rarely have an ugly site. They have a badly built one. It looked fine at handover - then the contact form started spamming, the cart stopped saving on iPhone, a plugin update wiped the homepage, and the "developer" who did it for 18,000 taka stopped replying. The design was never the problem. The development was. That is the part "cheap" usually gets wrong, and it is the part you cannot see until it breaks.
Low cost ecommerce website development in Dhanmondi, done by someone who actually knows how to build, means the savings come from skipping the agency floor - not from skipping the engineering. A store built cheap-but-right uses licensed or properly free plugins instead of nulled ones carrying malware, runs on hosting in your own name instead of a reseller's oversold box, and keeps your bKash and delivery logic in a place you can edit later instead of buried in a theme file. None of that costs more to do correctly the first time. It just requires someone who knows the difference.
I am one senior developer with around five years building ecommerce for the Bangladesh market, and I do the whole build myself - structure, design, WooCommerce, payment wiring, courier hooks, testing. There is no junior practising on your store and no account manager translating your request into a ticket that gets half-built. When you ask why the checkout behaves a certain way, you are asking the person who wrote it. That is what keeps a cheap build coherent instead of stitched together from three people's half-decisions.
Pricing is flat and on the table before you commit: 50,000 BDT to start, 90,000 and 1,50,000 BDT for larger catalogues and more integrations, fully custom from 3,00,000 BDT. Fifty percent to begin, fifty on launch. You approve the full design before I touch the checkout code - the design-approval guarantee - so you are never paying the balance for a store that came back nothing like what you agreed to.
See pricing in BDT