Reddit reviews Projector Replacement Lamp Bulb Fit For Samsung SP-M250S SP-M251 BP47-00059A BP47-00058A
We found 1 Reddit comments about Projector Replacement Lamp Bulb Fit For Samsung SP-M250S SP-M251 BP47-00059A BP47-00058A. Here are the top ones, ranked by their Reddit score.
A little googling shows you can obtain one for about half the price... buyer beware, it says "without housing" so I have no idea if that makes life difficult to replace it or if it's relatively simple.
http://www.amazon.com/Projector-Replacement-SP-M250S-BP47-00059A-BP47-00058A/dp/B00EY9OEKK
If the specs of the new projector are wildly better than yours, then yeah a new one might be worthwhile. But really it's about what fits your budget - more internet searching/ebay would be your friend before making a final decision.
And yes, refurbished means it must meet the manufacturer's initial criteria for sale - so it should have a brand new bulb.