Hard to see their condition from pics. Contraction clean in Canada goes from $65 to $100 per hour depending on 2 or 3 people working respectively. That may work out less with the exchange. But it’s hard on equipment and takes a lot of time. Each window will have a different amount of whatever to scrap off. Think of how many hour it will take you to set up n run by yourself and charge $60 x 6hrs= $360 or $60× 8hrs= $480. So quote high and tell them it’s high, but it’s an estimate. Include half price for drive time to and from if there is distance to travel. Hope that helps cheers