In any mall or mall-like entity like Station Park, some stores seem to blend into each other: The…read morewomen's frou-frou frou-frou boutique (Claire's, Francesca's, Hope Ave, etc.); the women's reasonably priced clothes and accessories (Maurices, Evereve, Lane Bryant, etc.); the outdoor store; the shoe stores with a little other stuff store (Nike, Famous Footwear, etc.); the accessories-centric store (Charming Charlie), the candle-centric knick-knack shop (Bungalow Blue), and so on.
In the case of Tully's, it seems to blend in with the Van's and Nike store (because it actually also sells Van's and Nike's), and the Zumiez at Station Park -- as well as stores like PacSun, Urban Outfitters, etc. and other malls because of it is cool-boy and young-man, skate-centric clothes and brands.
For similarish stores, having something that sets it apart -- such as strong discount prices or a unique core element -- helps vault it out of mediocrity. In the case of Tilly's, I really don't see that unique element.
Let's focus on the positive ... Tilly's has A LOT of stuff. First of all, they have almost as many Van's t-shirts than at the Van's store and, oddly enough, some originals you won't even find at the big V. There are also plenty of options from brands like Levis, North Face, Quicksilver, Billabong, Volcom, DC, Fox, Roxy, Hurley, and Etnies.
And if you like more casual-ware, you'll find a lot: t-shirts, hoodies, graphic tees and sweatshirts, shoes, penny boards and other skateboards, shorts and board shorts, backpacks, accessories (a lot of wallets, sunglasses, and watches) ... and that probably just scratches the surface.
The prices are a bit high, but it's a pretty good selection of clothes worth checking out.