I'm not really a big fan of bingsu or any type of shaved ice but I think the ones I got at Snow Time were decent in terms of flavour and size.
In terms of cost, paying 8+ dollars for flavoured ice is a bit costly, but I guess you are paying for the flavours and toppings.
My friends and I got the matcha red bean, where the shaved ice was matcha flavoured and was topped with red bean and matcha ice cream. We substituted the ice cream for mochi. The matcha bingsu itself was rich in matcha flavour. Slightly bitter but still sweet. The red bean and condensed milk also balanced the bitterness from the matcha. I love mochi and these were nice and chewy, great substitution.
My friends also got the traditional one with soy bean powder, almonds and mochi on top of a milk bingsu. All together the flavours mixed well and gave it a soy bean taste. There were also red bean in it which gave it a slight sweetness to it. This one was lighter than the matcha. My friend found the base itself bland and could use a bit more sweetness, but I thought it was good.
Overall not bad for shaved ice. Considering most of their bingsu choices are on a milk shaved ice base, I'm not completely sure if I would go back often since I'm not a huge fan of bingsu. Perhaps they can do more flavours then I may come back to try the others. That being said, I would recommend trying this place if you want to try Korean style shaved ice!