Customer service quite decent, prices pretty good, quality of products also very decent. Same goes for prices.
I've been to this store a few times, and I've found the staff to be quite helpful, offering assistance if they see you might need a hand. They also appear to be rather knowledgeable on their products.
Their prices are decent, and quality of products as well as product selection are quite good. This isn't a huge store by any means, but it definitely has a very good selection of children's toys.
Like someone mentioned previously, the free gift wrapping is definitely a very nice touch that they have at this chain.
All-in-all, I'll definitely be returning to Mastermind whenever I'm in need of some kiddie toys for my nephews :-)