My first snowboard was from London Sports, back in 1997. It was a special deal for about $190 including board boots and bindings, so understandably i wasnt expecting much. The deck was an embarrassing looking "Rated R" thing, and thankfully the bindings/boots were tastefully non-descript. That setup lasted me about 8 years of maybe 2 board trips a year. Binding strap snapped on one of the bindings, but it was repairable. Boots were like jelly by the end of it, but since i was (still am) a recreational boarder, it didnt bother me
Just last month I was boarding in Niigata, and i saw one of the rental boards there was the same deck i had in that setup. That would be 17years since its release!
Looking in London sports now, i see they *still* have a bargain setup for under $200. It uses a soft flexing camber board with loud pop art styling. This isnt a bad deck; i replaced my first setup with that+salomon bindings/boots a couple of years ago. Bit painful on the eyes though.
BUT, moving onto the $350 budget, they will most likely provide you with a last years model K2 deck/bindings. Most of their stuff there is K2, 5150 and Salomon. They are generally past season models, or rental market models, but definitely not stuff that will just disintegrate with yearly visits. I still go in there regularly to look for stuff i might want to add to my (now quite expensive) snowboarding gear cache. Good luck!