Being outside the US, I have tried many online magic shops (no brick & mortars in my area). In the past I've had packages gone missing, wrong items included, and some horrible customer service.
Now that I've ordered through MJM, I know what people are talking about when they say it's their favourite magic dealer. MJM's customer service is second to none, their shipping excellent, and their prices more than reasonable.
Another happy customer here. Thanks MJM!