Hope this doesn't come across the wrong way but I highly doubt you can get a SW rod/reel combination for $150 that will last more than one season if you fish more than occasionally. As much as my rods and reels get down to the beach and flats this is definitely the case for me; I would wager a month or two and the proof would come out in the pudding.
A rod is pretty salt-proof however the rigors of delivering big flies in more demanding situations like wind, surf and big fish soon take their toll on quality compromised gear.
A less than battle-worthy reel must have every vulnerable part serviced per each outing or it will fall prey to rust. Better reels have (among other things) fewer parts vulnerable to corrosion, are machined from bar stock, and are proven to last for decades.
In summary, you really do get what you pay for in my humble opinion. The ol' Yankee saying "penny wise, pound foolish" applies.
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