I have ordered twice from them and have not had any problems. For my two orders made within a day of each other, they shipped it in the same package and refunded me the shipping cost of one of the orders at my request. Given their responsive and reasonable customer service, I will shop again with them for domestic squishies.
I have ordered from Modes4u for 8 months now. I have made 11 orders total. I live in the US and have never had any problems with shipping. It has never been hard to find what I am looking for. Every time I email any type of question, they always reply within 48 hours.