Why Tilbury sits in an odd spot for buyers
Tilbury is close enough to Windsor-Essex that some buyers working that market will bid on Tilbury houses without really knowing Chatham-Kent's pricing, and close enough to Chatham-Kent that the reverse happens too. That's not a problem for a seller — more interest generally is a good thing — but it's a reason to ask a buyer plainly which market they actually work day to day, and what comparable houses they've bought nearby, not just where their office is.
The condition factors that still drive the number
None of that geography changes what actually sets the price: roof age, furnace age, wiring type, and any visible foundation or water issues. A buyer who can walk through those specifics with you, rather than giving a round number with no explanation, is showing their work — which is worth more than the number itself at this stage.