‘would you buy without knowing the area first (but purely on returns)’
The answer is NO!!!
You MUST get to know the area, starting with at least a couple of months research into the sustainability of the main industries in the town, population trends, vacancy levels, prices, rents, etc. Make sure the town is big enough to support property managers, tradesmen, etc, as you’ll need these to manage & maintain the property.
You should also get maps and familiarise yourself with the area. Note that RE Agents can be a bit ‘creative’ with their suburb naming, and the place you buy over the web might be away from everything else.
If all still looks OK, contact local agents, book a plane ticket and spend at least a week up there looking around.
The markets of towns dependent on a single industry or employers can be very cyclical and you could lose a lot of money.
Don’t scrimp on travel or inspection costs as they are your safeguard to ensure that you get a good property in a good area.
But if your research shows the place has got a future and the numbers stack up, then go ahead and buy, knowing you’ve made an informed decision.
Peter