frugalist
n.— «On the opposite end of the spectrum are the few people who call themselves anti-consumerists, freegans, frugalists or just plain Dumpster divers. Whatever the moniker, these people delight in drastically reducing their consumer spending, finding life’s essentials at bargain prices or paying nothing at all.» —“For frugalists, bargain hunting is a lifestyle” by Allison Linn MSNBC June 3, 2008. (source: Double-Tongued Dictionary)