Microwave suggestions

So I bought the samsung that was on here from ebay but its slightly too wide and slightly too deep. We have a 23L 800W Daewoo thats much smaller physically but the magnetron is knackered, i'd replace but the front control panel is also damaged from being melted by a hob previously (oops, yes its a tight space!). Any suggestions that aren't through the roof? Argos had some reasonable russell hobbs ones listed earlier but now all out of stock.