Can't imagine it will cost you less to develop in house in terms of salaried engineering hours, and you probably won't get close to AskGeo in terms of performan

Can't imagine it will cost you less to develop in house in terms of salaried engineering hours, and you probably won't get close to AskGeo in terms of performance. A fast spatial index is non trivial. Classic case of not properly valuing the cost of internal engineering resources.