Well, you could contact them and ask if you could speak to someone locally who had a suit made. Gauge their response.
Find out about pricing, the fabrics and get a sense of their knowledge. Ask where the suits are actually manufactured.
If they come to your office, you are not obligated to buy anything. Make an appointment and see what they are like when they show up.
It still is a bit of a gamble but so your homework, ask them about what happens if you are not...